Sauer, H. J. J., & Howell, R. H. (1982). Solutions manual to environmental control principles: An educational supplement to ASHRAE handbook 1981 fundamentals volume. American Society of Heating, Refrigerating and Air-conditioning Engineers, Inc.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিSauer, Harry J. Jr, এবং Ronald H. Howell. Solutions Manual to Environmental Control Principles: An Educational Supplement to ASHRAE Handbook 1981 Fundamentals Volume. Atlanta, Ga: American Society of Heating, Refrigerating and Air-conditioning Engineers, Inc, 1982.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিSauer, Harry J. Jr, এবং Ronald H. Howell. Solutions Manual to Environmental Control Principles: An Educational Supplement to ASHRAE Handbook 1981 Fundamentals Volume. American Society of Heating, Refrigerating and Air-conditioning Engineers, Inc, 1982.