Dyfyniad APA

Parkinson, A. (1980). A First Year Engineering Drawing (2nd Ed.). A H Wheeler.

Dyfyniad Arddull Chicago

Parkinson, A.C. A First Year Engineering Drawing. 2nd Ed. Allahabad: A H Wheeler, 1980.

Dyfyniad MLA

Parkinson, A.C. A First Year Engineering Drawing. 2nd Ed. A H Wheeler, 1980.

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