Gill, E. (1917). Parlers (2nd state).
Chicago-viite (17. p.)Gill, Eric. Parlers (2nd State). 1917.
MLA-viite (8. p.)Gill, Eric. Parlers (2nd State). 1917.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.
Gill, E. (1917). Parlers (2nd state).
Chicago-viite (17. p.)Gill, Eric. Parlers (2nd State). 1917.
MLA-viite (8. p.)Gill, Eric. Parlers (2nd State). 1917.