by Willis H. Johnson...[et al.]
Holt, Rinehart and Winston, 1974
Buku Teks
McCourt, Richard M., author
McGraw-Hill, 1990
Buku Referensi
Enger, Eldon D., author
McGraw-HIll, 2003
Buku Teks
Vodopich, Darrell S., author
McGraw-Hill, 2008
Buku Teks
Enger, Eldon D., author
McGraw-Hill, 2009
Buku Teks