Erskine, J. (1944). A musical companion: A guide to the understanding and enjoyment of musica. Tudor Publishing.
Citazione stile Chigago Style (17a edizione)Erskine, John. A Musical Companion: A Guide to the Understanding and Enjoyment of Musica. Nueva York: Tudor Publishing, 1944.
Citatione MLA (9a ed.)Erskine, John. A Musical Companion: A Guide to the Understanding and Enjoyment of Musica. Tudor Publishing, 1944.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.