APA aipamena

Knorr, D. (1983). Sustainable food systems. AVI Pub. Co.

Chicago Style aipamena

Knorr, Dietrich. Sustainable Food Systems. Westport, Conn: AVI Pub. Co, 1983.

MLA aipamena

Knorr, Dietrich. Sustainable Food Systems. AVI Pub. Co, 1983.