Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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