APA (7th ed.) Citation

GREGG.. & LESLIE, L. A. e. a. (1973). Gregg: Shorthand for colleges vol. 2. -- 2nd ed. McGraw-Hill.

Chicago Style (17th ed.) Citation

GREGG.. and Louis A. et al LESLIE. Gregg: Shorthand for Colleges Vol. 2. -- 2nd Ed. New York: McGraw-Hill, 1973.

MLA (9th ed.) Citation

GREGG.. and Louis A. et al LESLIE. Gregg: Shorthand for Colleges Vol. 2. -- 2nd Ed. McGraw-Hill, 1973.