APA

Skinner A. S., Smith A., . (1979). A system of social science. Oxford: Clarendon Press; New York: Oxford University Press.

Chicago

Skinner Andrew S, Smith Adam, . 1979. A system of social science. Oxford: Clarendon Press; New York: Oxford University Press.

Harvard

Skinner A. S., Smith A., . (1979). A system of social science. Oxford: Clarendon Press; New York: Oxford University Press.

MLA

Skinner Andrew S, Smith Adam, . A system of social science. Oxford: Clarendon Press; New York: Oxford University Press. 1979.