Não informado. (2004). Teaching thinking & problem solving. Research for Better Schools.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Teaching Thinking & Problem Solving. Philadelphia, Pa: Research for Better Schools, 2004.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Teaching Thinking & Problem Solving. Research for Better Schools, 2004.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.