APA (7th ed.) Citation

Hallock, R. L. (1978). Inventing for fun & profit. Harmony Books.

Chicago Style (17th ed.) Citation

Hallock, Robert Lay. Inventing for Fun & Profit. New York: Harmony Books, 1978.

MLA (9th ed.) Citation

Hallock, Robert Lay. Inventing for Fun & Profit. Harmony Books, 1978.

Warning: These citations may not always be 100% accurate.