Edlund, L. (1974). Modus Vetus: Sight Singing and ear-training in major/minor tonality / Lars Edlund. Hansen / Chester Music.
Citazione stile Chigago Style (17a edizione)Edlund, Lars. Modus Vetus: Sight Singing and Ear-training in Major/minor Tonality / Lars Edlund. Stockholm/New York: Hansen / Chester Music, 1974.
Citatione MLA (8a ed.)Edlund, Lars. Modus Vetus: Sight Singing and Ear-training in Major/minor Tonality / Lars Edlund. Hansen / Chester Music, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.