Dyfyniad APA

Poolack, H. W. (1988). Tools Design (2nd ed.). Prentice-Hall of India.

Dyfyniad Arddull Chicago

Poolack, Herman W. Tools Design. 2nd ed. New Jersey: Prentice-Hall of India, 1988.

Dyfyniad MLA

Poolack, Herman W. Tools Design. 2nd ed. Prentice-Hall of India, 1988.

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