APA
Bullough V. L., Bullough B. j. a., . (1969). The emergence of modern nursing. New York: Macmillan.
Chicago
Bullough Vern L, Bullough Bonnie jt author, . 1969. The emergence of modern nursing. New York: Macmillan.
Harvard
Bullough V. L., Bullough B. j. a., . (1969). The emergence of modern nursing. New York: Macmillan.
MLA
Bullough Vern L, Bullough Bonnie jt author, . The emergence of modern nursing. New York: Macmillan. 1969.