Dyfyniad APA

Walther, R., & Strauss, M. (1967). Polytechnical dictionary. Pergamon Press.

Dyfyniad Arddull Chicago

Walther, Rudolf, and Martin Strauss. Polytechnical Dictionary. Oxford ; New York: Pergamon Press, 1967.

Dyfyniad MLA

Walther, Rudolf, and Martin Strauss. Polytechnical Dictionary. Pergamon Press, 1967.

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