APA

Tonne H. A., Popham E. L. & Freeman M. H. (1957). Methods of teaching business subjects. New York: Gregg Division, McGraw Hill Book Co.

Chicago

Tonne Herbert Arthur, Popham Estelle L and Freeman M Herbert. 1957. Methods of teaching business subjects. New York: Gregg Division, McGraw Hill Book Co.

Harvard

Tonne H. A., Popham E. L. and Freeman M. H. (1957). Methods of teaching business subjects. New York: Gregg Division, McGraw Hill Book Co.

MLA

Tonne Herbert Arthur, Popham Estelle L and Freeman M Herbert. Methods of teaching business subjects. New York: Gregg Division, McGraw Hill Book Co. 1957.