Não informado. (1957). Belmontia: Miscellaneous publications in botany. Agricultural University, Laboratory of Plant Taxonomy and Geography.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Belmontia: Miscellaneous Publications in Botany. Wageningen, Holanda: Agricultural University, Laboratory of Plant Taxonomy and Geography, 1957.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Belmontia: Miscellaneous Publications in Botany. Agricultural University, Laboratory of Plant Taxonomy and Geography, 1957.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.