APA (7th ed.) Citation

Block, M. F., Kuczynski, B., & Taylor, D. B. (1939). Gypsies, their life and their customs. Appleton-Century.

Chicago Style (17th ed.) Citation

Block, Martin Friedrich, Barbara Kuczynski, and Duncan Burnett Taylor. Gypsies, Their Life and Their Customs. New York: Appleton-Century, 1939.

MLA (9th ed.) Citation

Block, Martin Friedrich, et al. Gypsies, Their Life and Their Customs. Appleton-Century, 1939.