Gaya APA

Jr, R, O, Z., Bellas, A, S. (2006). A Primer for Benefit Cost Analyisis . United Kingdom: Edward Elgar Publishing Limited.

Gaya MLA

Jr, Richard, O., Zerbe., Bellas, Allen, S.. "A Primer for Benefit Cost Analyisis". United Kingdom: Edward Elgar Publishing Limited, 2006. Text.