APA (7th ed.) Citation

Malatesta , E., & Richards , V. (1968). Errico Malatesta. "Collana Porro".

Chicago Style (17th ed.) Citation

Malatesta , Errico, and Vernon Richards. Errico Malatesta. "Collana Porro", 1968.

MLA (8th ed.) Citation

Malatesta , Errico, and Vernon Richards. Errico Malatesta. "Collana Porro", 1968.

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