Rich, Carole
Wadsworth and Cengage Learning, 2010
Buku Teks SO
Bromage, Mary C.
McGraw-Hill, 1984
Buku Teks
edited by Josette Caruana, Marco Bisogno, and Mariafrancesca Sicilia
Emerald Publishing Limited, 2023
Buku Teks SO
by Brian S. Brooks ... [and others]
Bedford/St. Martins, 2002
Buku Teks SO
by Brian S. Brooks [and others]
Martins Press, 1992
Buku Teks SO