Παραπομπή APA

Rees, M., & Ruffini, R. W. (1975). Black holes, gravitational waves and cosmology: An introduction to current research. Gordon.

Παραπομπή Chicago Style

Rees, Martin, και Remo Wheeler Ruffini. Black Holes, Gravitational Waves and Cosmology: An Introduction to Current Research. New York: Gordon, 1975.

Παραπομπή MLA

Rees, Martin, και Remo Wheeler Ruffini. Black Holes, Gravitational Waves and Cosmology: An Introduction to Current Research. Gordon, 1975.