•Readings in Ancient Greek Philosophy: From Thales to Aristotle, S. Marc. Cohen, Patricia Curd, and C. D. C. Reeve.
This is standard a anthology. It is organized chronologically. The Presocratics are first, followed by the Sophists, Plato, and concluding with Aristotle. The translations are modern, and the selections are reasonable. This anthology is a good choice for the student who wants modern translations but does not wish to own complete works.
•Philosophy Before Socrates, Richard D. McKirahan, Jr.
This is a standard set of translations and commentary on the Presocratics.
•The Presocratic Philosophers. A Critical History with a Selection of Texts, G. S. Kirk, J. E. Raven, and M. Schofield.
•Plato. Complete Works, John Cooper.
This is the now standard collection of translations of Plato's works. There are translations of individual works I prefer to the ones included in this set, but there is no superior complete set of translations in English.
•Complete Works of Aristotle, Jonathan Barnes.
This is the now standard collection of translations of Aristotle's works. There are translations of individual works I prefer to the ones included in this set, but there is no superior complete set of translations in English.
•Hellenistic Philosophy. Introductory Readings, Brad Inwood and L. P. Gerson.
This is a standard anthology. It is has selections from the three main Hellenistic schools. The first part of the book is devoted to Epicureanism, the second part to Stoicism, and the third part to Skepticism. The selections are reasonable, and the translations are modern. Further, because the sources for the Hellenistic philosophers are many, this anthology is a useful reference work.
•The Hellenistic Philosophers. Volume I. Translations of the Principal Sources, with Philosophical Commentary. Volume II. Greek and Latin Texts, with Notes and Bibliography, A. A. Long and D. N. Sedley.
These volumes are the now standard set of translations, collection of Greek texts, and commentary on the Hellenistic philosophers. It is organized in rough chronological order. Early Pyrrhonism is first, followed by Epicureanism, Stoicism, the Academic Skeptics, and finishing with the Pyrrhonist revival. This is an essential reference work.