APA (7th ed.) Citation

Van Jaarsveld, E. J., & Ward-Hilhorst, E. (1994). Gasterias of South Africa: A new revision of a major succulent group. Fernwood Press in association with the National Botanical Institute.

Chicago Style (17th ed.) Citation

Van Jaarsveld, Ernst J., and Ellaphie Ward-Hilhorst. Gasterias of South Africa: A New Revision of a Major Succulent Group. Vlaeberg, South Africa: Fernwood Press in association with the National Botanical Institute, 1994.

MLA (9th ed.) Citation

Van Jaarsveld, Ernst J., and Ellaphie Ward-Hilhorst. Gasterias of South Africa: A New Revision of a Major Succulent Group. Fernwood Press in association with the National Botanical Institute, 1994.