Gaya APA

Watson, C. (1990). Statistics for management and economics 4th (4th ed.). Needham Heights, Mass.: Allyn and Bacon, c.

Gaya MLA

Watson, Collin. "Statistics for management and economics 4th". 4th ed. Needham Heights, Mass.: Allyn and Bacon, c, 1990. Buku Wajib.