Cita APA

Gregg, J. R. 1., & Gregg, J. R. 1. (1955). Gregg shorthand manual simplified (2. edition.). New York, New York: McGraw-Hill.

Citación estilo Chicago

Gregg, John Robert 1867-1948, y John Robert 1867-1948 Gregg. Gregg Shorthand Manual Simplified. 2. edition. New York, New York: McGraw-Hill, 1955.

Cita MLA

Gregg, John Robert 1867-1948, y John Robert 1867-1948 Gregg. Gregg Shorthand Manual Simplified. 2. edition. New York, New York: McGraw-Hill, 1955.