APA
(1963). Teaching about world regions. New York, USA: The State Education Department Bureau of Secondary Curriculum development.
Chicago
1963. Teaching about world regions. New York, USA: The State Education Department Bureau of Secondary Curriculum development.
Harvard
(1963). Teaching about world regions. New York, USA: The State Education Department Bureau of Secondary Curriculum development.
MLA
Teaching about world regions. New York, USA: The State Education Department Bureau of Secondary Curriculum development. 1963.