APA (7th ed.) Citation

Lewis, W. E. (1980). Problem-solving principles for programmers.

Chicago Style (17th ed.) Citation

Lewis, William E. Problem-solving Principles for Programmers. 1980.

MLA (9th ed.) Citation

Lewis, William E. Problem-solving Principles for Programmers. 1980.

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