Dyfyniad APA

ENVIRONMENTAL & BELL, P. A. (1996). Environmental psychology.-- ed.4. Harcourt Brace College.

Dyfyniad Arddull Chicago

ENVIRONMENTAL and Paul A. BELL. Environmental Psychology.-- Ed.4. Philadelphia: Harcourt Brace College, 1996.

Dyfyniad MLA

ENVIRONMENTAL and Paul A. BELL. Environmental Psychology.-- Ed.4. Harcourt Brace College, 1996.

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