Gaya APA

Katz, W, A. (1982). Introduction to Reference Work Vol.II : Reference Services and Reference Processes / William A.Katz (Ed. 4). USA: McGraw-Hill.

Gaya MLA

Katz, William, A. "Introduction to Reference Work Vol.II : Reference Services and Reference Processes / William A.Katz". Ed. 4 USA: McGraw-Hill, 1982. Text.