APA
Samford C. D., Cottle E., . (1952). Social studies in the secondary school. New York: McGraw Hill.
Chicago
Samford Clarence D, Cottle Eugene, . 1952. Social studies in the secondary school. New York: McGraw Hill.
Harvard
Samford C. D., Cottle E., . (1952). Social studies in the secondary school. New York: McGraw Hill.
MLA
Samford Clarence D, Cottle Eugene, . Social studies in the secondary school. New York: McGraw Hill. 1952.