Cita APA (7a ed.)

Sachs, M. (1989). International book trade directory: Europe, Australia, Oceania, Latin America, Africa and Asia (2nd. ed 1989.). Saur.

Cita Chicago Style (17a ed.)

Sachs, Michael. International Book Trade Directory: Europe, Australia, Oceania, Latin America, Africa and Asia. 2nd. ed 1989. München [etc.]: Saur, 1989.

Cita MLA (9a ed.)

Sachs, Michael. International Book Trade Directory: Europe, Australia, Oceania, Latin America, Africa and Asia. 2nd. ed 1989. Saur, 1989.