Gaya APA
GERSTER, Etelka. (1907).
Stimmfuhre guida vocale. guide vocal. vocal guide .
Berlin:
Rich & Erler.
Gaya Chicago
GERSTER, Etelka.
Stimmfuhre guida vocale. guide vocal. vocal guide.
Berlin:
Rich & Erler,
1907.
.
Gaya MLA
GERSTER, Etelka.
Stimmfuhre guida vocale. guide vocal. vocal guide.
Berlin:
Rich & Erler,
1907.
.
Gaya Turabian
GERSTER, Etelka.
Stimmfuhre guida vocale. guide vocal. vocal guide.
Berlin:
Rich & Erler,
1907.
.