Penelitian Kualitatif

Fraenkel, IR. dan Wallen, N.E. 1996. How to design and evaluate Research in Education Third Edition. New York: McGraw-Hill, Inc.

Leedy, Paul D. dan Leedy, P. D. And Ormrod, J.E. 2005. Practical Research. Planning and Design. Eighth Edition. Upper Saddle River, New Jersey: Pearson, Merril Prentice Hall.