Cita APA

Fry, R., & Hume, G. B. (1967). Manual of Commercial Correspondence. Issac Pitman.

Citación estilo Chicago

Fry, Roland, y G Bayley Hume. Manual of Commercial Correspondence. London: Issac Pitman, 1967.

Cita MLA

Fry, Roland, y G Bayley Hume. Manual of Commercial Correspondence. Issac Pitman, 1967.