Cita APA (7a ed.)

Nichols, J. E. (1957). Livestock improvement in relation to heredity and environment (4th ed.). Oliver and Boyd.

Cita Chicago Style (17a ed.)

Nichols, J. E. Livestock Improvement in Relation to Heredity and Environment. 4th ed. Edinburgh [Lothian]: Oliver and Boyd, 1957.

Cita MLA (8a ed.)

Nichols, J. E. Livestock Improvement in Relation to Heredity and Environment. 4th ed. Oliver and Boyd, 1957.