Dyfyniad APA

(1978). Reader's Digest Library of Modern Knowledge. Reader's digest.

Dyfyniad Arddull Chicago

Reader's Digest Library of Modern Knowledge. London: Reader's digest, 1978.

Dyfyniad MLA

Reader's Digest Library of Modern Knowledge. Reader's digest, 1978.

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