Sammet. Jean E.
Programming languages: history and fundamentals
Prentice-Hall, 1969
Buku Teks
Wiedmann, Clark
Handbook of APL Programming
Petrocelli Books, 1974
Buku Referensi
LePage, Wilbur R.
Applied APL programming
Prentice-Hall, 1978
Buku Teks
Harms, Edward
Introduction APL and computer programming
John Wiley & Sons, 1977
Buku Teks
Pakin, Sandra
APL: a short course
Prentice-Hall, 1973
Buku Teks