Gaya APA

Webber, R, A. (1981). To Be A Manager: Essentials Of Management (Ed. 1). U.S.A: Richard D. Irwin, inc.

Gaya MLA

Webber, Ross, A.. "To Be A Manager: Essentials Of Management". Ed. 1 U.S.A: Richard D. Irwin, inc, 1981. Text.