APA

Platt B., Doherty C., Broughton A. C. & Morris. (1990). Beyond 40 percent. Washington D. C., USA: Island Press.

Chicago

Platt Brenda, Doherty Christine, Broughton Anne Claire and Morris. 1990. Beyond 40 percent. Washington D. C., USA: Island Press.

Harvard

Platt B., Doherty C., Broughton A. C. and Morris. (1990). Beyond 40 percent. Washington D. C., USA: Island Press.

MLA

Platt Brenda, Doherty Christine, Broughton Anne Claire and Morris. Beyond 40 percent. Washington D. C., USA: Island Press. 1990.