Cita APA (7a ed.)

Clift, D. H., & Warncke, R. (1972). ALA Report to IFLA for 1970-1971.

Cita Chicago Style (17a ed.)

Clift, David H., y Ruth Warncke. ALA Report to IFLA for 1970-1971. 1972.

Cita MLA (9a ed.)

Clift, David H., y Ruth Warncke. ALA Report to IFLA for 1970-1971. 1972.