APA Citation

Koestler, A. (1988). Kepler. Barcelona: Salvat, Editores.

Chicago Style Citation

Koestler, Arthur. Kepler. Barcelona: Salvat, Editores, 1988.

MLA Citation

Koestler, Arthur. Kepler. Barcelona: Salvat, Editores, 1988.

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