Wiedmann, Clark
Handbook of APL Programming
Petrocelli Books, 1974
Buku Referensi
Harms, Edward
Introduction APL and computer programming
John Wiley & Sons, 1977
Buku Teks SO
Paulman, Jack
Fundamentals of APL programming
Win C. Brown, 1976
Buku Teks SO
Helzer, Garry
Applied linear algebra with APL
Little, Brown, 1983
Buku Teks SO
APL in practice : what you need to know to install and use successful APL systems and Major applications
John Wiley & Sons, 1980
Buku Teks SO