APA (7th ed.) Citation

Baker, H. A., Anderson, F., Below, I. v., & Oliver, E. G. H. (1967). Ericas in southern Africa. Purnell.

Chicago Style (17th ed.) Citation

Baker, H. A., Fay Anderson, Irma von Below, and E. G. H. Oliver. Ericas in Southern Africa. Cape Town, Johannesburg: Purnell, 1967.

MLA (9th ed.) Citation

Baker, H. A., et al. Ericas in Southern Africa. Purnell, 1967.