Jenks, Albert Ernest
American Association, 1937
Buku Teks
edited by Donald D. Wood
Emerald, 2016
eBooks
edited by Andreas Bandak and Lars Hojer
John Wiley & Sons, 2015
Buku Teks
Routledge, 1994
Buku Teks
Banks, Marcus, author
Routledge, 1996
Buku Teks