Viswanathan, Madhu
Measurement error and research design
SAGE Publ., 2005
 Buku Teks
Handbook of health research methods: investigation, measurement and analysis
edited by Ann Bowling, Shah Ebrahim
Open University Press, 2007
 Buku Teks
Handbook of research methods on social entrepreneurship
Richard G. Seymour, editor
Edward Elgar, 2012
 Buku Teks
Thyer, Bruce A.
The handbook of social work research methods
London : Sage Publications, 2001,
 Buku Referensi
The handbook of social work research methods
editor, Bruce A. Thyer
Sage Publications, 2001
 Buku Referensi