APA (7th ed.) Citation

Knab, A., & Bulcke, C. 8 Naturlieder, V, pf, E-Dur, Excerpts - BSB Mus.ms. 15091: [caption title in pencil by P.Y. Knab:] Die Amsel. (Bulcke). Armin Knab.

Chicago Style (17th ed.) Citation

Knab, Armin, and Carl Bulcke. 8 Naturlieder, V, Pf, E-Dur, Excerpts - BSB Mus.ms. 15091: [caption Title in Pencil by P.Y. Knab:] Die Amsel. (Bulcke). Armin Knab.

MLA (9th ed.) Citation

Knab, Armin, and Carl Bulcke. 8 Naturlieder, V, Pf, E-Dur, Excerpts - BSB Mus.ms. 15091: [caption Title in Pencil by P.Y. Knab:] Die Amsel. (Bulcke). Armin Knab.