APA

Mort P. R., . (1957). Principles of school administration. N.Y: McGraw-Hill Book Co.

Chicago

Mort Paul R, . 1957. Principles of school administration. N.Y: McGraw-Hill Book Co.

Harvard

Mort P. R., . (1957). Principles of school administration. N.Y: McGraw-Hill Book Co.

MLA

Mort Paul R, . Principles of school administration. N.Y: McGraw-Hill Book Co. 1957.