APA (7th ed.) Citation

K.G. Saur Verlag & Verrel, B. (1985). Publishers' international directory with ISBN index =: Internationales Verlagsadressbuch mit ISBN-Register (12th edition.). K. G. Saur.

Chicago Style (17th ed.) Citation

K.G. Saur Verlag and Barbara Verrel. Publishers' International Directory with ISBN Index =: Internationales Verlagsadressbuch Mit ISBN-Register. 12th edition. München [i pozostałe]: K. G. Saur, 1985.

MLA (9th ed.) Citation

K.G. Saur Verlag and Barbara Verrel. Publishers' International Directory with ISBN Index =: Internationales Verlagsadressbuch Mit ISBN-Register. 12th edition. K. G. Saur, 1985.