APA-Zitierstil (7. Ausg.)

(1989). Event Line 90: An international directory of conferences, conventions, symposia, trade fairs and exhibitions, and sporting events. Elsevier.

Chicago-Zitierstil (17. Ausg.)

Event Line 90: An International Directory of Conferences, Conventions, Symposia, Trade Fairs and Exhibitions, and Sporting Events. Amsterdam: Elsevier, 1989.

MLA-Zitierstil (9. Ausg.)

Event Line 90: An International Directory of Conferences, Conventions, Symposia, Trade Fairs and Exhibitions, and Sporting Events. Elsevier, 1989.