Não informado. (1962). Keio Business Review. Keio University, Society of Business and Commerce.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Keio Business Review. Tokyo: Keio University, Society of Business and Commerce, 1962.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Keio Business Review. Keio University, Society of Business and Commerce, 1962.
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