APA (7th ed.) Citation

Snow, D. A. (1993). Down on their luck: A study of homeless street people. University of California Press.

Chicago Style (17th ed.) Citation

Snow, David A. Down on Their Luck: A Study of Homeless Street People. Berkeley: University of California Press, 1993.

MLA (9th ed.) Citation

Snow, David A. Down on Their Luck: A Study of Homeless Street People. University of California Press, 1993.