APA način citiranja (7. izdanje)

Beltran, J., & Smith, J. (2017). Ecological and evolutionary significance of crassulacean acid metabolism in the montane genus puya (Bromeliaceae).

Čikaški stil citiranja (17. izdanje)

Beltran, J., i J. Smith. Ecological and Evolutionary Significance of Crassulacean Acid Metabolism in the Montane Genus Puya (Bromeliaceae). 2017.

MLA način citiranja (9. izdanje)

Beltran, J., i J. Smith. Ecological and Evolutionary Significance of Crassulacean Acid Metabolism in the Montane Genus Puya (Bromeliaceae). 2017.