APA (7th ed.) Citation

Porteous, J. (1973). Coins (1. publ.). Octopus Books.

Chicago Style (17th ed.) Citation

Porteous, John. Coins. 1. publ. London: Octopus Books, 1973.

MLA (9th ed.) Citation

Porteous, John. Coins. 1. publ. Octopus Books, 1973.

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