Hartshorn, Truman Asa, author
John Wiley & Sons, 1980
Buku Teks
Jonas, Andrew E. G, author
Wiley-Blackwell, 2015
Buku Teks
Genevieve Giuliano, Susan Hanson, editors
Guilford Press, 2017
Buku Teks
Knox, Paul, author
Longman, 1996
Buku Teks
edited by John I. Clarke
Pergamon Press, 1984
Buku Teks