APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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