APA (7th ed.) Citation

Lanjouw J, Baehni, C., Robyns, W., Ross, R., Rousseau, J., Schopf, J., . . . Stafleu, F. (1961). International Code of the Botanical Nomenclature. I.U.B.S.-UNESCO.

Chicago Style (17th ed.) Citation

Lanjouw J, et al. International Code of the Botanical Nomenclature. Utretch, Netherlands: I.U.B.S.-UNESCO, 1961.

MLA (9th ed.) Citation

Lanjouw J, et al. International Code of the Botanical Nomenclature. I.U.B.S.-UNESCO, 1961.