Dyfyniad APA

Schell, E. H. Technique Of Executive Control Erwin Haskell Schell. McGraw-Hill.

Dyfyniad Arddull Chicago

Schell, Erwin Haskell. Technique Of Executive Control Erwin Haskell Schell. McGraw-Hill.

Dyfyniad MLA

Schell, Erwin Haskell. Technique Of Executive Control Erwin Haskell Schell. McGraw-Hill.

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