Παραπομπή APA

Allen, J. R., & Walker, J. H. 1. (1939). Heating and air conditioning (5th ed.). New York: McGraw-Hill Book Company, Inc.

Παραπομπή Chicago Style

Allen, John Robins, and J. H. 1890- Walker. Heating and Air Conditioning. 5th ed. New York: McGraw-Hill Book Company, Inc, 1939.

Παραπομπή MLA

Allen, John Robins, and J. H. 1890- Walker. Heating and Air Conditioning. 5th ed. New York: McGraw-Hill Book Company, Inc, 1939.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.