Não informado. (1969). Learning and Development. McGill University, Centre for Learning and Development.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Learning and Development. Montreal, Canada: McGill University, Centre for Learning and Development, 1969.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Learning and Development. McGill University, Centre for Learning and Development, 1969.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.