Gaya APA

Yubni, A, I, M, W., Sutermeister, R, A. (1963). People And Productivity (-). New York: McGraw-Hill Book Company.

Gaya MLA

Yubni, Aqidatul, Islam,, Maratun, Wahidah., Sutermeister, Robert, A.. "People And Productivity". - New York: McGraw-Hill Book Company, 1963. Text.