APA (7 ম সংস্করণ) উদ্ধৃতি

Szarnicki, H. A. (1975). Michael O'Connor, first Catholic bishop of Pittsburgh, 1843-1860: A story of the Catholic pioneers of Pittsburgh and western Pennsylvania (1st. ed.). Wolfson Pub. Co..

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Szarnicki, Henry A. Michael O'Connor, First Catholic Bishop of Pittsburgh, 1843-1860: A Story of the Catholic Pioneers of Pittsburgh and Western Pennsylvania. 1st. ed. Pittsburgh: Wolfson Pub. Co., 1975.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Szarnicki, Henry A. Michael O'Connor, First Catholic Bishop of Pittsburgh, 1843-1860: A Story of the Catholic Pioneers of Pittsburgh and Western Pennsylvania. 1st. ed. Wolfson Pub. Co., 1975.