Citazione Stile APA (7a Edizione)

Friend, J., & Hickling, A. (1987). Planning under pressure: The strategic choice approach. Pergamon Press.

Citazione stile Chigago Style (17a edizione)

Friend, John, e Allen Hickling. Planning Under Pressure: The Strategic Choice Approach. [Oxford Oxfordshire] ; New York: Pergamon Press, 1987.

Citatione MLA (9a ed.)

Friend, John, e Allen Hickling. Planning Under Pressure: The Strategic Choice Approach. Pergamon Press, 1987.