Mosca, Gaetano, author
McGraw-Hill Book, 1939
Buku Teks
by Carlton Clymer Rodee [and others]
McGraw-Hill, 1983
Buku Teks
F. Isjwara, author
Bina cipta , 1974
Buku Teks
Charles Scribner's , 1970
Buku Teks
Ranney, Austin, author
Holt, Rinehart and Winston , 1958
Buku Teks