(Pa.), C. C. o. P. (1890). Constitution and By-Laws. Columbus Club of Pittsburgh. Pittsburgh, Pa..
Chicago-viite (17. p.)(Pa.), Columbus Club of Pittsburgh. Constitution and By-Laws. Columbus Club of Pittsburgh. Pittsburgh, Pa., 1890.
MLA-viite (8. p.)(Pa.), Columbus Club of Pittsburgh. Constitution and By-Laws. Columbus Club of Pittsburgh. Pittsburgh, Pa., 1890.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.