APA (7th ed.) Citation

Barber, J., Metcalfe, J. S., & Porteous, M. (2016). Barriers to growth in small firms. Routledge.

Chicago Style (17th ed.) Citation

Barber, John, John S. Metcalfe, and Mike Porteous. Barriers to Growth in Small Firms. London ; New York: Routledge, 2016.

MLA (9th ed.) Citation

Barber, John, et al. Barriers to Growth in Small Firms. Routledge, 2016.