McNamara, K. J. (1997). Shapes of time: The evolution of growth and development.
Chicago Style aipamenaMcNamara, Kenneth J. Shapes of Time: The Evolution of Growth and Development. Johns Hopkins Press, London, 1997.
MLA aipamenaMcNamara, Kenneth J. Shapes of Time: The Evolution of Growth and Development. 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.