APA (7th ed.) Citation

Popper, D. (1900). 15 Easy studies: Preparatory to studies Opus 76 and 73 for cello. International Music.

Chicago Style (17th ed.) Citation

Popper, David. 15 Easy Studies: Preparatory to Studies Opus 76 and 73 for Cello. Nueva York: International Music, 1900.

MLA (9th ed.) Citation

Popper, David. 15 Easy Studies: Preparatory to Studies Opus 76 and 73 for Cello. International Music, 1900.

Warning: These citations may not always be 100% accurate.