Citazione APA

Gribbin, J. (1999). birth of time: How we measured the age of the universe. Weidenfeld and Nicolson.

Stile di citazione Chicago

Gribbin, John. Birth of Time: How We Measured the Age of the Universe. London: Weidenfeld and Nicolson, 1999.

Citazione MLA

Gribbin, John. Birth of Time: How We Measured the Age of the Universe. Weidenfeld and Nicolson, 1999.