APA (7th ed.) Citation

Barth, E., & Arndt, U. (1974). Hearts, cupids, and red roses: The story of the Valentine symbols. Houghton Mifflin/Clarion Books.

Chicago Style (17th ed.) Citation

Barth, Edna, and Ursula Arndt. Hearts, Cupids, and Red Roses: The Story of the Valentine Symbols. New York: Houghton Mifflin/Clarion Books, 1974.

MLA (9th ed.) Citation

Barth, Edna, and Ursula Arndt. Hearts, Cupids, and Red Roses: The Story of the Valentine Symbols. Houghton Mifflin/Clarion Books, 1974.