APA aipamena

Katz, W. A. (1992). Introduction to refenrence work. New York: McGraw-Hill, Inc.

Chicago Style aipamena

Katz, William A. Introduction to Refenrence Work. New York: McGraw-Hill, Inc, 1992.

MLA aipamena

Katz, William A. Introduction to Refenrence Work. New York: McGraw-Hill, Inc, 1992.