Jürgen R. Grote and Claudius Wagemann, editors
Routledge, Taylor & Francis Group, 2019
Buku Teks
Wood, James L., author
Wadsworth, 1982
Buku Teks
Robert, Ron E., author
Mosby, 1979
Buku Teks
Edited by Baris Coban
Lexington Books, 2016
Buku Teks
Howard, John R., author
J.B. Lippincott, 1974
Buku Teks