APA

Jacobson P. B., . (1954). The effective school principal in elementary and secondary schools. n.p: s.n.

Chicago

Jacobson Paul Benjamin, . 1954. The effective school principal in elementary and secondary schools. n.p: s.n.

Harvard

Jacobson P. B., . (1954). The effective school principal in elementary and secondary schools. n.p: s.n.

MLA

Jacobson Paul Benjamin, . The effective school principal in elementary and secondary schools. n.p: s.n. 1954.