Dyfyniad APA

Janulaw, A. (2001). Science Voyages Earth, and Physical Sciences. McGraw - HillCompanies, Inc.

Dyfyniad Arddull Chicago

Janulaw, Al. Science Voyages Earth, and Physical Sciences. McGraw - HillCompanies, Inc, 2001.

Dyfyniad MLA

Janulaw, Al. Science Voyages Earth, and Physical Sciences. McGraw - HillCompanies, Inc, 2001.

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