APA (7th ed.) Citation

Schaxel, J. (1987). Julius Schaxel an Ernst Haeckel. Urania-Verlag.

Chicago Style (17th ed.) Citation

Schaxel, Julius. Julius Schaxel an Ernst Haeckel. Leipzig: Urania-Verlag, 1987.

MLA (8th ed.) Citation

Schaxel, Julius. Julius Schaxel an Ernst Haeckel. Urania-Verlag, 1987.

Warning: These citations may not always be 100% accurate.