APA
Callan S., Thomas J. M., . (2007). Environmental economics & management. Mason, Ohio: AIPI.
Chicago
Callan Scott, Thomas Janet M, . 2007. Environmental economics & management. Mason, Ohio: AIPI.
Harvard
Callan S., Thomas J. M., . (2007). Environmental economics & management. Mason, Ohio: AIPI.
MLA
Callan Scott, Thomas Janet M, . Environmental economics & management. Mason, Ohio: AIPI. 2007.