Todd, Lewis Paul, author
Harcourt, Brace & World, 1961
Buku Teks
Heller, Landis R., author
Charles E. Merrill, 1966
Buku Teks
Platt, Nathaniel, author
Prentice-Hall, 1964
Buku Teks
Moon, Glenn W., author
Holt, Rinehart and Winston, 1964
Buku Teks
Graebner, Norman A., author
McGraw-Hill, 1975
Buku Teks