Dyfyniad APA

Pasachoff, J. M. (1992). Journey through the universe. Saunders College Pub..

Dyfyniad Arddull Chicago

Pasachoff, Jay M. Journey Through the Universe. Philadelphia: Saunders College Pub., 1992.

Dyfyniad MLA

Pasachoff, Jay M. Journey Through the Universe. Saunders College Pub., 1992.

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