Style de citation APA (7e éd.)

Oppenfeld, H. v., Oppenfeld, J. v., Sandoval, P. R., & Sta. Iglesia, J. C. (1957). Farm management land use and tenancy in the Philippines. [s.n.].

Style de citation Chicago (17e éd.)

Oppenfeld, Horst von, Judith von Oppenfeld, P. R. Sandoval, et J. C. Sta. Iglesia. Farm Management Land Use and Tenancy in the Philippines. College, Laguna: [s.n.], 1957.

Style de citation MLA (9e éd.)

Oppenfeld, Horst von, et al. Farm Management Land Use and Tenancy in the Philippines. [s.n.], 1957.