APA (7th ed.) Citation

Life Books (Firm). (2003). The seven wonders of the world. Life Books.

Chicago Style (17th ed.) Citation

Life Books (Firm). The Seven Wonders of the World. New York: Life Books, 2003.

MLA (8th ed.) Citation

Life Books (Firm). The Seven Wonders of the World. Life Books, 2003.

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