Shaw, Harry, author
McGraw-Hill, 1975
Buku Referensi
Peter Suwarno, author
Gadjah Mada University Press, 1999
Buku Referensi
Flavell, Roger, author
Kyle Cathie, 1995
Buku Referensi
Dando, Sylvia, author
McGraw-Hill Book, 1987
Buku Referensi
Shipley, Joseph T., author
Philosophical Library, 1945
Buku Referensi