APA

ERNESTO KOEHLER - JOHN WUMMER, .KOEHLER: 12 STUDIES OPUES 33 (BOOK II OF THE PROGRESS IN FLUTE PLAYING) FOR FLUTE. New York: INTERNATIONAL MUSIC COMPANY.

Chicago

ERNESTO KOEHLER - JOHN WUMMER, .KOEHLER: 12 STUDIES OPUES 33 (BOOK II OF THE PROGRESS IN FLUTE PLAYING) FOR FLUTE. New York: INTERNATIONAL MUSIC COMPANY.

Harvard

ERNESTO KOEHLER - JOHN WUMMER, .KOEHLER: 12 STUDIES OPUES 33 (BOOK II OF THE PROGRESS IN FLUTE PLAYING) FOR FLUTE. New York: INTERNATIONAL MUSIC COMPANY.

MLA

ERNESTO KOEHLER - JOHN WUMMER, .New York: INTERNATIONAL MUSIC COMPANY. .