May, G. H. (1996). The future is ours: Foreseeing, managing, and creating the future. Praeger.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিMay, Graham H. The Future Is Ours: Foreseeing, Managing, and Creating the Future. Westport, Conn.: Praeger, 1996.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিMay, Graham H. The Future Is Ours: Foreseeing, Managing, and Creating the Future. Praeger, 1996.