Gaya APA

POPHAM, E, L., Tilton, R, S, E, A. (1983). SECRETARIAL PROCEDURES AND ADMINISTRATION (Eight edition). Cincinnati: SOUTH-WESTERN PUBLISHING CO..

Gaya MLA

POPHAM, Estelle, L.., Tilton, Rita, Sloan, Et, Al.,. "SECRETARIAL PROCEDURES AND ADMINISTRATION". Eight edition Cincinnati: SOUTH-WESTERN PUBLISHING CO., 1983. Textbook.