The Elements of New Testament Greek.
First published in 1965, The Elements of New Testament Greek has, over the years, established itself as the standard textbook for scholars and students of the Bible. The book is now reissued with a number of small revisions and additions, and a more substantial change concerning the recitation of the alphabet. Otherwise, the aim of this perennially popular book remains as before: to present the elements (and only the elements) of new Testament Greek as simply, clearly, and completely as possible, so that the student may be spared all unnecessary toil, and may make rapid progress in understanding the lingua franca of the Hellenistic world. A key to the various exercises in the book remains available, and is also published by Cambridge University Press.
Wenham, J. W., Young, N. H., & Pennington, J. T. (2001). The elements of New Testament Greek. Cambridge: Cambridge University Press.