APA (7th ed.) Citation

Janson, M., Šimkova, P., & Schniederjürgen, A. (2019). World Guide to Libraries 2019 (34th edition.). de Gruyter Saur.

Chicago Style (17th ed.) Citation

Janson, Marlies, Pavla Šimkova, and Alex Schniederjürgen. World Guide to Libraries 2019. 34th edition. Berlin Boston: de Gruyter Saur, 2019.

MLA (9th ed.) Citation

Janson, Marlies, et al. World Guide to Libraries 2019. 34th edition. de Gruyter Saur, 2019.