APA (7th ed.) Citation

Van Vogt , A. E. (1980). I polimorfi. Libra.

Chicago Style (17th ed.) Citation

Van Vogt , Alfred Elton. I Polimorfi. Libra, 1980.

MLA (8th ed.) Citation

Van Vogt , Alfred Elton. I Polimorfi. Libra, 1980.

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