Damask, A.C., author
Academic Press, 1981
Buku Teks
Jesse, Kenneth E., author
Harcourt Brace Jovanovich, 1987
Buku Teks
Carnap, Rudolf, author
Harvard University Press, 1946
Buku Teks
Loing, A.J.L., author
Ichtiar, 1978
Buku Teks
Burton, Richard Francis, Sir, 1821-1890, translator
Dover Publications, 1964
Buku Teks