Woolley, Tyler A.
Burgess, 1969
Buku Teks
edited by Arthur C. Giese, John S. Pearse and Vicki B. Pearse
Blackwell Scientific , 1987
Buku Teks
edited by Arthur C. Giese, John S. Pearse and Vicki B. Pearse
Boxwood Press, 1991
Buku Teks
Barnes, Robert D.
Saunders, 1969
Buku Teks
Wilmoth, James H.
Prentice-Hall, 1967
Buku Teks