Παραπομπή APA

Gates, J. K. (1989). Guide to the use of libraries and information sources (Ed.6.).

Παραπομπή Chicago Style

Gates, Jean Key. Guide to the Use of Libraries and Information Sources. Ed.6. New york, McGraw-Hill, 1989.

Παραπομπή MLA

Gates, Jean Key. Guide to the Use of Libraries and Information Sources. Ed.6. 1989.