Não informado. Northwestern Alumni News. North western University, Alumni Association Boardof Directors.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Northwestern Alumni News. Evanston, Ill: North western University, Alumni Association Boardof Directors.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Northwestern Alumni News. North western University, Alumni Association Boardof Directors.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.