Dyfyniad APA

SANTRA S.C. (2005). ENVIRONMENTAL SCIENCE (2.). NEW CENTRAL BOOK AGENCY.

Dyfyniad Arddull Chicago

SANTRA S.C. ENVIRONMENTAL SCIENCE. 2. LONDON: NEW CENTRAL BOOK AGENCY, 2005.

Dyfyniad MLA

SANTRA S.C. ENVIRONMENTAL SCIENCE. 2. NEW CENTRAL BOOK AGENCY, 2005.

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