Cita APA (7a ed.)

Packard, W. V. (1981). Voyage estimating (2nd ed.). Fairplay.

Cita Chicago Style (17a ed.)

Packard, William V. Voyage Estimating. 2nd ed. London: Fairplay, 1981.

Cita MLA (9a ed.)

Packard, William V. Voyage Estimating. 2nd ed. Fairplay, 1981.