Cita APA (7a ed.)

Hughes, H. (1938). Minerals yearbook 1938 (1a ed.). Nations Unies.

Cita Chicago Style (17a ed.)

Hughes, Herbert. Minerals Yearbook 1938. 1a ed. Washington: Nations Unies, 1938.

Cita MLA (9a ed.)

Hughes, Herbert. Minerals Yearbook 1938. 1a ed. Nations Unies, 1938.