Dyfyniad APA

HORUS EDITIONS. (2002). THE ULTIMATE HOW IT WORKS ENCYCLOPEDIA. HORUS EDITIONS.

Dyfyniad Arddull Chicago

HORUS EDITIONS. THE ULTIMATE HOW IT WORKS ENCYCLOPEDIA. HORUS EDITIONS, 2002.

Dyfyniad MLA

HORUS EDITIONS. THE ULTIMATE HOW IT WORKS ENCYCLOPEDIA. HORUS EDITIONS, 2002.

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