Indonesia. Biro Pusat Statistik
Biro Pusat Statistik, 1963
Buku Referensi
Tooley, Michael H., author
Boston Newnes, 1992
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Indonesia. Badan Pusat Statistik
Badan Pusat Statistik, 2000
Buku Referensi
American Society of Heating, Refrigerating and Air-Conditioning Engineers.
American Society of Heating, Refrigerating and Air-Conditioning Engineers., 1963
Buku Referensi
Brindley, Keith, author
A Butterworth-Heinemann Book, 1994
Buku Teks