Lincoln, Yvonna S., author
SAGE Publications, 1985
Buku Teks
Mellon, Constance A., author
Greenwood Press, 1990
Buku Teks
Bierens de Haan, J. D. (Johannes Diderik), 1866-1943, author
De Erven F. Bohn, 1929
Buku Teks
Moinat, Frédéric, author
[, Springer], 2012
eBooks
Purcell, Edward A., author
The University Press, 1973
Buku Teks