APA aipamena

Gittinger, J. P. (1982). Economic analysis of agricultural projects (2nd ed.).

Chicago Style aipamena

Gittinger, J. Price. Economic Analysis of Agricultural Projects. 2nd ed. 1982.

MLA aipamena

Gittinger, J. Price. Economic Analysis of Agricultural Projects. 2nd ed. 1982.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.