APA (7th ed.) Citation

Hartwigsen, G. L. (1980). Design concepts: A basic guidebook. Allyn and Bacon.

Chicago Style (17th ed.) Citation

Hartwigsen, Gail Lynn. Design Concepts: A Basic Guidebook. Boston: Allyn and Bacon, 1980.

MLA (9th ed.) Citation

Hartwigsen, Gail Lynn. Design Concepts: A Basic Guidebook. Allyn and Bacon, 1980.

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