Rahn, Joan E., author
Macmillan, 1974
Buku Teks
Turney, Tully H., author
Mosby, 1973
Buku Teks
by William K. Purves ... [et.al.]
W.H. Freeman, 1997
Buku Teks
by William K. Purves ... [et al.]
Salt lake City Sinauer Associates , 1998
Buku Teks
Smith, Ella Thea, author
Harcourt, Brace & World, 1959
Buku Teks