APA

Craf J. R., . (1949). An introduction to business principles and practices. New York: Harper.

Chicago

Craf John Riley, . 1949. An introduction to business principles and practices. New York: Harper.

Harvard

Craf J. R., . (1949). An introduction to business principles and practices. New York: Harper.

MLA

Craf John Riley, . An introduction to business principles and practices. New York: Harper. 1949.