APA

HEINRICH PANOFKA, SCHIRMERS LIBRARY OF MUSICAL CLASSICS, .TWENTY FOUR PROGRESSIVE VOCALISES. New York: G. SCHIRMER, INC.

Chicago

HEINRICH PANOFKA, SCHIRMERS LIBRARY OF MUSICAL CLASSICS, .TWENTY FOUR PROGRESSIVE VOCALISES. New York: G. SCHIRMER, INC.

Harvard

HEINRICH PANOFKA, SCHIRMERS LIBRARY OF MUSICAL CLASSICS, .TWENTY FOUR PROGRESSIVE VOCALISES. New York: G. SCHIRMER, INC.

MLA

HEINRICH PANOFKA, SCHIRMERS LIBRARY OF MUSICAL CLASSICS, .New York: G. SCHIRMER, INC. .