Cita APA

Marrull, J. (1965). A method of soil and water conservation analysis (1a. ed.). San José: [s.n].

Citación estilo Chicago

Marrull, José. A Method of Soil and Water Conservation Analysis. 1a. ed. San José: [s.n], 1965.

Cita MLA

Marrull, José. A Method of Soil and Water Conservation Analysis. 1a. ed. San José: [s.n], 1965.