Não informado. Northwestern Alumni News. North western University, Alumni Association Boardof Directors.
Citação do estilo Chicago (17ª ed.)Não informado. Northwestern Alumni News. Evanston, Ill: North western University, Alumni Association Boardof Directors.
Citação MLA (8ª ed.)Não informado. Northwestern Alumni News. North western University, Alumni Association Boardof Directors.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.