APA引文

Popper, D., & Schmidt, B. Studies preparatory to the high school ("Hohe Schule") of cello playing, opus 76. International Music.

芝加哥风格引文

Popper, David, 与 Bernhard Schmidt. Studies Preparatory to the High School ("Hohe Schule") of Cello Playing, Opus 76. New York: International Music.

MLA引文

Popper, David, 与 Bernhard Schmidt. Studies Preparatory to the High School ("Hohe Schule") of Cello Playing, Opus 76. International Music.