APA (7th ed.) Citation

Stafleu, F. A., Demoulin, V., Greuter, W., Hiepko, P., Linczevski, I. A., McVaugh, R., . . . Schopf, J. M. (1978). International Code of Botanical Nomenclature: Adopted by the Twelfth International Botanical Congress, Leningrad, July 1975. Scheltema Holkema.

Chicago Style (17th ed.) Citation

Stafleu, F. A., et al. International Code of Botanical Nomenclature: Adopted by the Twelfth International Botanical Congress, Leningrad, July 1975. Utrecht: Scheltema Holkema, 1978.

MLA (9th ed.) Citation

Stafleu, F. A., et al. International Code of Botanical Nomenclature: Adopted by the Twelfth International Botanical Congress, Leningrad, July 1975. Scheltema Holkema, 1978.