Cita APA (7a ed.)

Sandford, R., & Snellgrove, L. E. (1977). Knights, priests & peasants (1. publ.). Longman.

Cita Chicago Style (17a ed.)

Sandford, Ron, y L. E. Snellgrove. Knights, Priests & Peasants. 1. publ. London: Longman, 1977.

Cita MLA (9a ed.)

Sandford, Ron, y L. E. Snellgrove. Knights, Priests & Peasants. 1. publ. Longman, 1977.