APA (7th ed.) Citation

Markov, M. A., & Hendzel, K. S. (1987). The Physical effects in the gravitational field of black holes. Nova Science Publishers.

Chicago Style (17th ed.) Citation

Markov, M. A., and Kevin S. Hendzel. The Physical Effects in the Gravitational Field of Black Holes. Commack N.Y.: Nova Science Publishers, 1987.

MLA (9th ed.) Citation

Markov, M. A., and Kevin S. Hendzel. The Physical Effects in the Gravitational Field of Black Holes. Nova Science Publishers, 1987.