Cita APA

Clapham, A. R., Tutin, T. G., & Warburg, E. F. (1968). Excursion flora of the British Isles (2nd ed.). Cambridge University Press.

Citación estilo Chicago

Clapham, A. R., T. G. Tutin, and E. F. Warburg. Excursion Flora of the British Isles. 2nd ed. Cambridge: Cambridge University Press, 1968.

Cita MLA

Clapham, A. R., et al. Excursion Flora of the British Isles. 2nd ed. Cambridge University Press, 1968.