Cita APA (7a ed.)

Whitcomb, H., & Whitcomb, J. (1959). Strictly for secretaries. Hurst & Blackett.

Cita Chicago Style (17a ed.)

Whitcomb, Helen, y John Whitcomb. Strictly for Secretaries. Lond.: Hurst & Blackett, 1959.

Cita MLA (8a ed.)

Whitcomb, Helen, y John Whitcomb. Strictly for Secretaries. Hurst & Blackett, 1959.