Powell, Russell A., 1950-, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Powell, Russell A., 1950-, author
Cengage Learning, 2017
Buku Teks
Powell, Russell A., 1950-, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Pierce, W. David, author
Lawrence Erlbaum Associates, 2004
Buku Teks
Klausmeier, Herbert J., author
Harper and Row, 1975
Buku Teks