APA (7th ed.) Citation

Presley, B. (1983). A guide to programming the Commodore computers: VIC-20 [and] -64. Lawrenceville Press.

Chicago Style (17th ed.) Citation

Presley, Bruce. A Guide to Programming the Commodore Computers: VIC-20 [and] -64. [Place of publication not identified]: Lawrenceville Press, 1983.

MLA (9th ed.) Citation

Presley, Bruce. A Guide to Programming the Commodore Computers: VIC-20 [and] -64. Lawrenceville Press, 1983.