John Hartley [and others]
Rinehart and Winston, 1962
Buku Teks
edited by John Miksic
Archipelago Press, [date of publication not identified]
Buku Teks
Bone, Robert G.
Littlefield, Adam, 1957
Buku Teks
Veit, Richard
Pearson, 2001
Buku Teks
Shidle, Norman G.
McGraw-Hill, 1951
Buku Teks