APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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