Dyfyniad APA

HARTWIGSEN, G. L. (1980). Design Concepts A Basic Guidebook Gail Lynn Hartwigsen. Allyn and Bacon.

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.