APA (7th ed.) Citation

Spedding, C. R. W., Walsingham, J. M., & Hoxey, A. M. (1981). Biological efficiency in agriculture. Acad. Press.

Chicago Style (17th ed.) Citation

Spedding, Colin R. W., J. M. Walsingham, and A. M. Hoxey. Biological Efficiency in Agriculture. London [u.a.]: Acad. Press, 1981.

MLA (9th ed.) Citation

Spedding, Colin R. W., et al. Biological Efficiency in Agriculture. Acad. Press, 1981.