Dyfyniad APA

Parker, S. P. (1993). McGraw-Hill encyclopedia of physics. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Parker, Sybil P. McGraw-Hill Encyclopedia of Physics. New York: McGraw-Hill, 1993.

Dyfyniad MLA

Parker, Sybil P. McGraw-Hill Encyclopedia of Physics. New York: McGraw-Hill, 1993.

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