Dyfyniad APA

Gregor, C. M. (1987). (the) Great Barrier Reef. Time-Life Books.

Dyfyniad Arddull Chicago

Gregor, Craig Mc. (the) Great Barrier Reef. Amsterdam: Time-Life Books, 1987.

Dyfyniad MLA

Gregor, Craig Mc. (the) Great Barrier Reef. Time-Life Books, 1987.

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