Não informado. (1919). Electrical Power Engineer. Electrical Power Engineers Association.
Chicago-viite (17. p.)Não informado. Electrical Power Engineer. Chertsey, Inglaterra: Electrical Power Engineers Association, 1919.
MLA-viite (8. p.)Não informado. Electrical Power Engineer. Electrical Power Engineers Association, 1919.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.