APA

Salter W. E. G., . (1969). Productivity and technical change. Cambridge: Cambridge University Press.

Chicago

Salter W E G, . 1969. Productivity and technical change. Cambridge: Cambridge University Press.

Harvard

Salter W. E. G., . (1969). Productivity and technical change. Cambridge: Cambridge University Press.

MLA

Salter W E G, . Productivity and technical change. Cambridge: Cambridge University Press. 1969.