Gaya APA

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

Gaya MLA

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