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, Christopher John, 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, Christopher John, et al. Grasses, Sedges and, Rushes in Colour. Blandford Press, 1979.