Cita APA (7th ed.)

Taylor, J. G. (1974). Black holes: The end of the universe? Fontana/Collins.

Cita Chicago (17th ed.)

Taylor, John Gerald. Black Holes: The End of the Universe? New York: Fontana/Collins, 1974.

Cita MLA (8th ed.)

Taylor, John Gerald. Black Holes: The End of the Universe? Fontana/Collins, 1974.