Gaya APA

George, I, . (1978). Modern Cost-Benefit Methods : an introduction to finacial economic and social Appraisal of Developm . London: Macmillan Published Ltd.

Gaya MLA

George, Irvin, . "Modern Cost-Benefit Methods : an introduction to finacial economic and social Appraisal of Developm". London: Macmillan Published Ltd, 1978. Text.