Berg, J. F. (1850). Dr. Berg's answer to the lecture of Archbishop Hughes on the decline of Protestantism: A lecture delivered in the Musical Fund Hall on Tuesday evening, November 26, 1850, in answer to Archbishop Hughes on the decline of Protestantism. Philadelphia.
Lua i Stíl Chicago (17ú heag.)Berg, Joseph F. Dr. Berg's Answer to the Lecture of Archbishop Hughes on the Decline of Protestantism: A Lecture Delivered in the Musical Fund Hall on Tuesday Evening, November 26, 1850, in Answer to Archbishop Hughes on the Decline of Protestantism. Philadelphia, 1850.
Lua MLA (8ú heag.)Berg, Joseph F. Dr. Berg's Answer to the Lecture of Archbishop Hughes on the Decline of Protestantism: A Lecture Delivered in the Musical Fund Hall on Tuesday Evening, November 26, 1850, in Answer to Archbishop Hughes on the Decline of Protestantism. Philadelphia, 1850.