APA (7 ম সংস্করণ) উদ্ধৃতি

Ambrose, S. E. (2005). Undaunted courage: Meriwether Lewis, Thomas Jefferson, and the opening of the American West. Simon & Schuster.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Ambrose, Stephen E. Undaunted Courage: Meriwether Lewis, Thomas Jefferson, and the Opening of the American West. Simon & Schuster, 2005.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Ambrose, Stephen E. Undaunted Courage: Meriwether Lewis, Thomas Jefferson, and the Opening of the American West. Simon & Schuster, 2005.