Citazione Stile APA (7a Edizione)

Barber, J., Metcalfe, J. S., & Porteous, M. (1989). Barriers to growth in small firms. Routledge.

Citazione stile Chigago Style (17a edizione)

Barber, J., J. S. Metcalfe, e M. Porteous. Barriers to Growth in Small Firms. London: Routledge, 1989.

Citatione MLA (9a ed.)

Barber, J., et al. Barriers to Growth in Small Firms. Routledge, 1989.