APA (7th ed.) Citation

Petrov, I. R. (1965). Chto takoe boleznʹ? Znanie.

Chicago Style (17th ed.) Citation

Petrov, I. R. Chto Takoe Boleznʹ? Moskva: Znanie, 1965.

MLA (9th ed.) Citation

Petrov, I. R. Chto Takoe Boleznʹ? Znanie, 1965.

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