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
International Society for Educational Information
ISEI, 1987
Buku Teks
edited Charles Singer, E.J. Holymyard, A.R. Hall
At The Clarendon Press, 1957
Buku Teks