Cita APA

Zettler, H. M. (1991). Gebrüder Haeckel Sport in Berlin 1910 - 1914. Nishen.

Citación estilo Chicago

Zettler, Hela Mitarb. Gebrüder Haeckel Sport in Berlin 1910 - 1914. Berlin: Nishen, 1991.

Cita MLA

Zettler, Hela Mitarb. Gebrüder Haeckel Sport in Berlin 1910 - 1914. Nishen, 1991.