Arriola, A. H., & Alejandro, G. J. D. (2015). Phylogeny of the Philippine coffeeae (Rubiaceae) inferred from multiple cpDNA and morphology. Transactions of the National Academy of Science and Technology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Arriola, Axel H., و Grecebio Jonathan D. Alejandro. "Phylogeny of the Philippine Coffeeae (Rubiaceae) Inferred from Multiple CpDNA and Morphology." Transactions of the National Academy of Science and Technology 2015.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Arriola, Axel H., و Grecebio Jonathan D. Alejandro. "Phylogeny of the Philippine Coffeeae (Rubiaceae) Inferred from Multiple CpDNA and Morphology." Transactions of the National Academy of Science and Technology, 2015.
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