LePage, Wilbur R.
Applied APL programming
Prentice-Hall, 1978
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Harms, Edward
Introduction APL and computer programming
John Wiley & Sons, 1977
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Paulman, Jack
Fundamentals of APL programming
Win C. Brown, 1976
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APL in practice : what you need to know to install and use successful APL systems and Major applications
John Wiley & Sons, 1980
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Polivka, Raymond P.
APL : the language and its usage
Prentice-Hall, 1975
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