Cita APA (7a ed.)

Schmidt-Braul, I. M. (1981). The book trade of the world. K. G. Saur.

Cita Chicago Style (17a ed.)

Schmidt-Braul, Ingo-Eric M. The Book Trade of the World. München [etc.]: K. G. Saur, 1981.

Cita MLA (9a ed.)

Schmidt-Braul, Ingo-Eric M. The Book Trade of the World. K. G. Saur, 1981.