Gaya APA

Callahan, C, F., Clark, L, H. (1982). Teaching in the middle and secondary schools: planning for competence (2 nd edition). New York: Macmillan Pub..

Gaya MLA

Callahan, Clark, F.., Clark, Leonard, H.. "Teaching in the middle and secondary schools: planning for competence". 2 nd edition New York: Macmillan Pub., 1982. Text.