APA (7th ed.) Citation

Savonius, M., & Popham, W. J. (1950). Wild flowers. E. Ward.

Chicago Style (17th ed.) Citation

Savonius, Moira, and W. J. Popham. Wild Flowers. Leicester, England: E. Ward, 1950.

MLA (9th ed.) Citation

Savonius, Moira, and W. J. Popham. Wild Flowers. E. Ward, 1950.