Cita APA (7th ed.)

Keizer, J. A., & Kempen, P. M. (2006). Business research projects: A solution-oriented approach. Butterworth-Heinemann.

Cita Chicago (17th ed.)

Keizer, Jimme A., i Piet M. Kempen. Business Research Projects: A Solution-oriented Approach. Burlington, MA: Butterworth-Heinemann, 2006.

Cita MLA (8th ed.)

Keizer, Jimme A., i Piet M. Kempen. Business Research Projects: A Solution-oriented Approach. Butterworth-Heinemann, 2006.