Nora Hebert, Rith E. Heisler, Jett Chinn, Olga Malakhova
Pearson, 2015
Buku Referensi
Rohen, Johannes W., author
Wolters Kluwer, 2016
Buku Referensi
Douglas J. Eder [and others]
McGraw-Hill Higher Education, 2004
Buku Referensi
Rohen, Johannes W., author
Lippincott Williams & Wilkins, 2011
Buku Referensi
Buku Teks