APA (7th ed.) Citation

Lenin, V. I., & Herrero, E. (1960). Cartas íntimas. Futuro.

Chicago Style (17th ed.) Citation

Lenin, Vladimir Ilʹich, and Enrique Herrero. Cartas íntimas. Buenos Aires: Futuro, 1960.

MLA (8th ed.) Citation

Lenin, Vladimir Ilʹich, and Enrique Herrero. Cartas íntimas. Futuro, 1960.

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