Reference etiquatte:a guide to excruciatingly correct bahavior
Artikel Jurnal
Shurter, Robert L.
Handy grammar reference: a guide to better English / Robert L. Shurter
McGraw-Hill, 1959
Buku Teks SO
Evans, Graham
The dictionary of world politics : a reference guide to concepts, ideas, and institutions
Harvester Wheatsheaf, 1990
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Cameron hydraulic data : a handy reference on the subject of hydraulics
Ingersoll-Rand Company, Cameron Pump Division, 1939
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Wichman, Karl
Handy dictionary of the German and English languages with rules as to pronuciation
David McKay, 1944
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