Alejandro, G. J. D., Balete, I. K. C., Caagbay, J. F. C., Cruz, J. M. M. B., Narciso, C. J. C., Nazareno, D. E., . . . Uy, M. M. (2011). Polyphyly of Bikkia Reinw. [Rubiaceae] based on multi-locus sequence analysis [ITS, rps16, trnl-F], with emphasis on the endemic Bikkia philippinensis val. including its conservation status. Acta Manilana.
Cytowanie według stylu Chicago (wyd. 17)Alejandro, Grecebio Jonathan D., Ian Kevin C. Balete, Julian Fabian C. Caagbay, Jana May Marie B. Cruz, Christine Joy C. Narciso, Dominic E. Nazareno, Cecilia I. Banag, i Millard M. Uy. "Polyphyly of Bikkia Reinw. [Rubiaceae] Based on Multi-locus Sequence Analysis [ITS, Rps16, Trnl-F], with Emphasis on the Endemic Bikkia Philippinensis Val. Including Its Conservation Status." Acta Manilana 2011.
Cytowanie według stylu MLA (wyd. 9)Alejandro, Grecebio Jonathan D., et al. "Polyphyly of Bikkia Reinw. [Rubiaceae] Based on Multi-locus Sequence Analysis [ITS, Rps16, Trnl-F], with Emphasis on the Endemic Bikkia Philippinensis Val. Including Its Conservation Status." Acta Manilana, 2011.