Gaya APA

Dowling, W, F., Sayles, L, R. (1978). How managers motivate : the imperatives of supervision (2nd. ed.). New York: McGraw-Hill Book. Co..

Gaya MLA

Dowling, William, F., Sayles, Leonard, R.. "How managers motivate : the imperatives of supervision". 2nd. ed. New York: McGraw-Hill Book. Co., 1978. Text.