APA (7 ম সংস্করণ) উদ্ধৃতি

Wittgenstein, L. (1997). Generally known as the blue and brown books. Blackwell.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Wittgenstein, Ludwig. Generally Known as the Blue and Brown Books. Blackwell, 1997.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Wittgenstein, Ludwig. Generally Known as the Blue and Brown Books. Blackwell, 1997.