APA

Russell G. E. G., Dallwitz M. J., Watson L., Koekemoer M., Smook L., Barker N. P. & Anderson H. M. (1990). Grasses of southern Africa: An identification manual with keys, descriptions, distributions, classification and automated identification and information retrieval from computerized data. Pretoria: National Botanic Gardens/Botanical Research Institute.

Chicago

Russell G E Gibbs, Dallwitz M J, Watson L, Koekemoer M, Smook L, Barker N P and Anderson H M. 1990. Grasses of southern Africa: An identification manual with keys, descriptions, distributions, classification and automated identification and information retrieval from computerized data. Pretoria: National Botanic Gardens/Botanical Research Institute.

Harvard

Russell G. E. G., Dallwitz M. J., Watson L., Koekemoer M., Smook L., Barker N. P. and Anderson H. M. (1990). Grasses of southern Africa: An identification manual with keys, descriptions, distributions, classification and automated identification and information retrieval from computerized data. Pretoria: National Botanic Gardens/Botanical Research Institute.

MLA

Russell G E Gibbs, Dallwitz M J, Watson L, Koekemoer M, Smook L, Barker N P and Anderson H M. Grasses of southern Africa: An identification manual with keys, descriptions, distributions, classification and automated identification and information retrieval from computerized data. Pretoria: National Botanic Gardens/Botanical Research Institute. 1990.