APA (7th ed.) Citation

Cahm Caroline, Ward Colin, & Cook Ian. P. A. Kropoktin's Sesquicentennial. Centre of European Studies.

Chicago Style (17th ed.) Citation

Cahm Caroline, Ward Colin, and Cook Ian. P. A. Kropoktin's Sesquicentennial. Centre of European Studies.

MLA (8th ed.) Citation

Cahm Caroline, et al. P. A. Kropoktin's Sesquicentennial. Centre of European Studies.

Warning: These citations may not always be 100% accurate.