Cita APA (7a ed.)

Lengenfelder, H. (1983). World guide to libraries = Internationales Bibliotheks-Handbuch (6th ed. = 6. Ausg.). K. G. Saur.

Cita Chicago Style (17a ed.)

Lengenfelder, Helga. World Guide to Libraries = Internationales Bibliotheks-Handbuch. 6th ed. = 6. Ausg. München [etc.]: K. G. Saur, 1983.

Cita MLA (9a ed.)

Lengenfelder, Helga. World Guide to Libraries = Internationales Bibliotheks-Handbuch. 6th ed. = 6. Ausg. K. G. Saur, 1983.