Dyfyniad APA

Leffingwell, W. (1975). Text book of office management (3rd.). McGraw Hill.

Dyfyniad Arddull Chicago

Leffingwell, W. Text Book of Office Management. 3rd. New Delhi: McGraw Hill, 1975.

Dyfyniad MLA

Leffingwell, W. Text Book of Office Management. 3rd. McGraw Hill, 1975.

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