APA (7th ed.) Citation

Marx, K., & Engels, F. (1974). Sobre la religion. Sigueme.

Chicago Style (17th ed.) Citation

Marx, Karl, and Friedrich Engels. Sobre La Religion. Salamanca: Sigueme, 1974.

MLA (9th ed.) Citation

Marx, Karl, and Friedrich Engels. Sobre La Religion. Sigueme, 1974.

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