Dyfyniad APA

Mollin, R. A. (2005). Codes: The guide to secrecy from ancient to modern times. Chapman and Hall/CRC.

Dyfyniad Arddull Chicago

Mollin, Richard A. Codes: The Guide to Secrecy from Ancient to Modern Times. Boca Raton: Chapman and Hall/CRC, 2005.

Dyfyniad MLA

Mollin, Richard A. Codes: The Guide to Secrecy from Ancient to Modern Times. Chapman and Hall/CRC, 2005.

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