Last, John M., 1926-
Appleton & Lange, 1998
Buku Teks
Last, John M., 1926-
McGraw-Hill, 1997
Buku Teks
Penalver, Rafael A.
Arco Publishing, Inc., 1981
Buku Teks
Penalver, Rafael A.
Arco Publishing, 1984
Buku Teks
editors, John M. Last, Robert B. Wallace ; associate editors, Elizabeth Barrett-Connor [and others]
Appleton & Lange, 1992
Buku Referensi