Cita APA (7th ed.)

Gill, J., Johnson, P., & Clark, M. Research methods for managers (4th ed.).

Cita Chicago (17th ed.)

Gill, John, Phil Johnson, i Murray Clark. Research Methods for Managers. 4th ed.

Cita MLA (8th ed.)

Gill, John, et al. Research Methods for Managers. 4th ed.