edited by Richard E. Mulcahy
Holt, Rinehart and Winston, 1967
Buku Teks
edited by H.C. Barksdale
Holt, Rinehart and Winston, 1964
Buku Teks
Kohler, Heinz, author
Alfred A. Knoff , 1961
Buku Teks
edited by Paul A. Samuelson
McGraw-Hill, 1970
Buku Teks
Hailstones, Thomas J., author
South-Western Publishing, 1974
Buku Teks