Modus vetus :
sight singing and ear-training in major/minor tonality /
Lars Edlund ; translation rev. by Alan Stout.

APA Citation

Edlund, L., Stout, A. (1974). Modus vetus: sight singing and ear-training in major/minor tonality. Stockholm: Nordiska musikförlaget .

MLA Citation

Edlund, Lars, and Alan Stout. Modus Vetus: Sight Singing And Ear-training In Major/minor Tonality. Stockholm: Nordiska musikförlaget , 1974.

Warning: These citations may not always be complete (especially for serials).