Cita APA (7a ed.)

Tovar, A. (1954). Linguistics and Prehistory. [s. n.].

Cita Chicago Style (17a ed.)

Tovar, Antonio. Linguistics and Prehistory. [S.l.]: [s. n.], 1954.

Cita MLA (9a ed.)

Tovar, Antonio. Linguistics and Prehistory. [s. n.], 1954.