APA (7e ed.) Bronvermelding

Edlund, L. (1974). Modus Vetus: Sight Singing and ear-training in major/minor tonality / Lars Edlund. Hansen / Chester Music.

Chicago (17e ed.) Bronvermelding

Edlund, Lars. Modus Vetus: Sight Singing and Ear-training in Major/minor Tonality / Lars Edlund. Stockholm/New York: Hansen / Chester Music, 1974.

MLA (8e ed.) Bronvermelding

Edlund, Lars. Modus Vetus: Sight Singing and Ear-training in Major/minor Tonality / Lars Edlund. Hansen / Chester Music, 1974.