APA (7th ed.) Citation
Polivka, R. P., & Pakin, S. (1975). APL: The Language and its usage. Prentice Hall.
Chicago Style (17th ed.) Citation
Polivka, Raymond P., and Sandra Pakin. APL: The Language and Its Usage. Englewood: Prentice Hall, 1975.
MLA (9th ed.) Citation
Polivka, Raymond P., and Sandra Pakin. APL: The Language and Its Usage. Prentice Hall, 1975.
Warning: These citations may not always be 100% accurate.