Cita APA (7th ed.)

United States Government Printing Office, Style Board. (1968). Word Division. Supplement to Government Printing Office Style Manual (7. Aufl.).

Cita Chicago (17th ed.)

United States Government Printing Office, Style Board. Word Division. Supplement to Government Printing Office Style Manual. 7. Aufl. Washington, 1968.

Cita MLA (8th ed.)

United States Government Printing Office, Style Board. Word Division. Supplement to Government Printing Office Style Manual. 7. Aufl. 1968.