Cita APA

Ledward, D. A., Ledward, D. A., Taylor, A. J., & Lawrie, R. A. (1983). Upgrading waste for feeds and food. Butterworths.

Chicago Edition Citation

Ledward, D A., D. A. Ledward, A. J. Taylor, i R. A. Lawrie. Upgrading Waste for Feeds and Food. London ; Boston: Butterworths, 1983.

Cita MLA

Ledward, D A., et al. Upgrading Waste for Feeds and Food. Butterworths, 1983.