Dyfyniad APA

Perry , J. H. (1941). Chemical engineers handbook (2nd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Perry , John H. Chemical Engineers Handbook. 2nd ed. New York: McGraw-Hill, 1941.

Dyfyniad MLA

Perry , John H. Chemical Engineers Handbook. 2nd ed. McGraw-Hill, 1941.

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