Gaya APA

Oesterle, L. (1903). Twenty-Five Easy and Progressive Studies For The Piano : Expressly Composed for Small Hands (Cet. 1). New York: G. Schirmer.

Gaya MLA

Oesterle, Louis. "Twenty-Five Easy and Progressive Studies For The Piano : Expressly Composed for Small Hands". Cet. 1 New York: G. Schirmer, 1903. Monograf.