Cita APA

Penrose, R. (2010). Cycles of time: An extraordinary new view of the universe. Vintage Books.

Citación estilo Chicago

Penrose, Roger. Cycles of Time: An Extraordinary New View of the Universe. London: Vintage Books, 2010.

Cita MLA

Penrose, Roger. Cycles of Time: An Extraordinary New View of the Universe. Vintage Books, 2010.

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