Gaya APA

Xu, F., Craene, L, R, D. (2010). Floral ontogeny of Annonaceae: evidence for high variability in floral form . : Oxford University Press on behalf of the Annals of Botany Company.

Gaya MLA

Xu, Fengxia., Craene, Louis, Ronse, De. "Floral ontogeny of Annonaceae: evidence for high variability in floral form". : Oxford University Press on behalf of the Annals of Botany Company, 2010. e-journal.