Não informado. (1953). Journal of the West African Institute for Oil Palm Research. West African Institute for Oil Palm Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Journal of the West African Institute for Oil Palm Research. Benin City, Nigeria: West African Institute for Oil Palm Research, 1953.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Journal of the West African Institute for Oil Palm Research. West African Institute for Oil Palm Research, 1953.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.