by Marcus A. Krupp ... [and others]
Lange Medical Publications, 1979
Buku Referensi
editor, Owen D.W. Hargie
Routledge, 1997
Buku Referensi
edited by Robert W. Peach
Irwin Professional, 1997
Buku Referensi
Russ, John C.
CRC Press, 1994
Buku Referensi
Norman K. Denzin, Yvonna S. Lincoln, editors
Sage Publications, 2000
Buku Referensi