APA (7th ed.) Citation

Humphries, C. J., Press, J. R., Hancke, V., & Skytte Christiansen, M. (1979). Grasses, sedges, and rushes in colour. Blandford Press.

Chicago Style (17th ed.) Citation

Humphries, C. J., J. R. Press, Verner Hancke, and M. Skytte Christiansen. Grasses, Sedges, and Rushes in Colour. Poole [England]: Blandford Press, 1979.

MLA (9th ed.) Citation

Humphries, C. J., et al. Grasses, Sedges, and Rushes in Colour. Blandford Press, 1979.