Dyfyniad APA

(1997). Cryptology / compiled by John F. Buydos with David Kahn.

Dyfyniad Arddull Chicago

Cryptology / Compiled by John F. Buydos with David Kahn. 1997.

Dyfyniad MLA

Cryptology / Compiled by John F. Buydos with David Kahn. 1997.

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