APA (7th ed.) Citation

Mackay, J. (2004). The world encyclopedia of stamps & stamp collecting. Lorenz Books.

Chicago Style (17th ed.) Citation

Mackay, James. The World Encyclopedia of Stamps & Stamp Collecting. London: Lorenz Books, 2004.

MLA (9th ed.) Citation

Mackay, James. The World Encyclopedia of Stamps & Stamp Collecting. Lorenz Books, 2004.

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