APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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