Gaya APA

Sekaran, U., Bougie, R. (2013). Research methods for business : a skill building approach (6th Ed.). United Kingdom: Wiley Publishing.

Gaya MLA

Sekaran, Uma., Bougie, Roger. "Research methods for business : a skill building approach". 6th Ed. United Kingdom: Wiley Publishing, 2013. Buku/Printed Material.