Cita APA (7th ed.)

Ross, R. C. (1961). Speak with ease (2d ed.). Van Nostrand.

Cita Chicago (17th ed.)

Ross, Russell Conwell. Speak with Ease. 2d ed. Princeton, N. J: Van Nostrand, 1961.

Cita MLA (9th ed.)

Ross, Russell Conwell. Speak with Ease. 2d ed. Van Nostrand, 1961.