Gaya APA

Sekaran, U., Bougie, R. (2010). Research Methods for Business : A Skill Building Approach (Ed. IX). United Kingdom: John Wiley & Sons, Inc..

Gaya MLA

Sekaran, Uma., Bougie, Roger. "Research Methods for Business : A Skill Building Approach". Ed. IX United Kingdom: John Wiley & Sons, Inc., 2010. .