APA (7th ed.) Citation

Dent, J. B., Blackie, M. J., & Harrison, S. R. (1979). Systems simulation in agriculture. Applied Science Publishers.

Chicago Style (17th ed.) Citation

Dent, J. B., M J. Blackie, and S R. Harrison. Systems Simulation in Agriculture. London: Applied Science Publishers, 1979.

MLA (9th ed.) Citation

Dent, J. B., et al. Systems Simulation in Agriculture. Applied Science Publishers, 1979.