APA (7th ed.) Citation

Janson, M., Kromer, C., & Schniederjürgen, A. (2021). World guide to Libraries 2021 (36th Edition.). de Gruyter Saur.

Chicago Style (17th ed.) Citation

Janson, Marlies, Christine Kromer, and Alex Schniederjürgen. World Guide to Libraries 2021. 36th Edition. Berlin Boston: de Gruyter Saur, 2021.

MLA (9th ed.) Citation

Janson, Marlies, et al. World Guide to Libraries 2021. 36th Edition. de Gruyter Saur, 2021.