by Willis H. Johnson...[et al.]
Holt, Rinehart and Winston, 1974
Buku Teks
Tillery, Bill W.
McGraw-Hill, 2008
Buku Teks
Hill, David J.
Mosby Elsevier, 2012
Buku Teks
Frantz, Harper W.
W.H. Freeman, 1968
Buku Teks
Anton, Howard
John Wiley & Sons, 1984
Buku Teks