Dyfyniad APA

Schell, E. H. (1957). Technique of executive control (8th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Schell, Erwin Haskell. Technique of Executive Control. 8th ed. New York: McGraw-Hill, 1957.

Dyfyniad MLA

Schell, Erwin Haskell. Technique of Executive Control. 8th ed. McGraw-Hill, 1957.

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