Παραπομπή APA

Lockwood, M. (2007). labyrinth of time: Introducing the universe. Oxford University Press.

Παραπομπή Chicago Style

Lockwood, Michael. Labyrinth of Time: Introducing the Universe. Oxford: Oxford University Press, 2007.

Παραπομπή MLA

Lockwood, Michael. Labyrinth of Time: Introducing the Universe. Oxford University Press, 2007.