Cita APA (7a ed.)

Minerals Yearbook 1989. (1989). Minerals Yearbook 1989. Unated Stated Department of the Interior.

Cita Chicago Style (17a ed.)

Minerals Yearbook 1989. Minerals Yearbook 1989. Washington - EEUU: Unated Stated Department of the Interior, 1989.

Cita MLA (8a ed.)

Minerals Yearbook 1989. Minerals Yearbook 1989. Unated Stated Department of the Interior, 1989.