APA (7th ed.) Citation

Fitter, R. S. R., Fitter, A., & Blamey, M. (1978). The wild flowers of Britain and Northern Europe. Collins.

Chicago Style (17th ed.) Citation

Fitter, Richard Sidney Richmond, Alastair Fitter, and Marjorie Blamey. The Wild Flowers of Britain and Northern Europe. London: Collins, 1978.

MLA (9th ed.) Citation

Fitter, Richard Sidney Richmond, et al. The Wild Flowers of Britain and Northern Europe. Collins, 1978.