Hartwigsen. (1980). Design concepts: A basic guidebook. Allyn and Bacon.
Chicago Style (17th ed.) CitationHartwigsen. Design Concepts: A Basic Guidebook. Boston: Allyn and Bacon, 1980.
MLA (8th ed.) CitationHartwigsen. Design Concepts: A Basic Guidebook. Allyn and Bacon, 1980.
Warning: These citations may not always be 100% accurate.