APA (7th ed.) Citation

McGregor, M., & Harding, W. (1998). Saxifrages: The complete list of species. The Saxifrages Soc.

Chicago Style (17th ed.) Citation

McGregor, Malcolm, and Winton Harding. Saxifrages: The Complete List of Species. East Yorkshire: The Saxifrages Soc, 1998.

MLA (9th ed.) Citation

McGregor, Malcolm, and Winton Harding. Saxifrages: The Complete List of Species. The Saxifrages Soc, 1998.