Παραπομπή APA

Katz, W. A. (1974). Introduction to Reference Work. McGraw-Hill.

Παραπομπή Chicago Style

Katz, Willaim A. Introduction to Reference Work. new Yprk: McGraw-Hill, 1974.

Παραπομπή MLA

Katz, Willaim A. Introduction to Reference Work. McGraw-Hill, 1974.