Callahan, J., Clark, L. Teaching in the Middle and Secondary Schools. New York etc.: Macmillan Publishing Company, 1988 534 p. 0-02-318210-5.
Callahan, J., Clark, L. Teaching in the Middle and Secondary Schools. New York etc.: Macmillan Publishing Company, 1988 534 p. 0-02-318210-5.
Callahan, J., Clark, L. (1988) Teaching in the Middle and Secondary Schools, New York etc.: Macmillan Publishing Company 534 p. 0-02-318210-5.
Callahan, J., & Clark, L. (1988). Teaching in the Middle and Secondary Schools. Planning for Competence. New York etc.: Macmillan Publishing Company, 534 p.
Callahan J, Clark L. Teaching in the Middle and Secondary Schools: Planning for Competence. New York etc.: Macmillan Publishing Company; 1988. p. 534 p. ISBN: 0-02-318210-5.
