Dyfyniad APA

American Home Economics Association. (1977). Handbook for metric usage. American Home Economics Association.

Dyfyniad Arddull Chicago

American Home Economics Association. Handbook for Metric Usage. N.W., Washington: American Home Economics Association, 1977.

Dyfyniad MLA

American Home Economics Association. Handbook for Metric Usage. American Home Economics Association, 1977.

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