APA Citation

Marx, K., & Engels, F. (1974). Concepción materialista y concepción idealista.

Chicago Style Citation

Marx, Karl, and Federico Engels. Concepción Materialista Y Concepción Idealista. 1974.

MLA Citation

Marx, Karl, and Federico Engels. Concepción Materialista Y Concepción Idealista. 1974.

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