Armstrong, James W.
Macmillan, 1976
Buku Teks
Armstrong, James W.
Macmillan, 1970
Buku Teks
Boas, Mary L.
John Wiley & Sons, 1983
Buku Teks
Miller, Charles David, 1942-
Scott, Foresman, 1969
Buku Teks
Duke University Press, 2018
Majalah, Jurnal, Buletin