Epstein, Cynthia Fuchs.
University of California Press, 1970.
Buku Teks
Epstein, Cynthia Fuchs, author
University of Califoenia Press , 1970
Buku Teks
Vanvugt, Ewald, 1943-, author
Aspekt, 2003
Buku Teks
Barrow, John D., author
Oxford University Press , 1998
Buku Teks
Haddix, Kathryn A., author
Glencoe, McGraw-Hill, 2002
Buku Teks