Coba jelasin Bacaan lanjutan dari Neogen dong

Lourens, L., Hilgen, F., Shackleton, N.J., Laskar, J., Wilson, D., (2004) “The Neogene Period”. Dalam: Gradstein, F., Ogg, J., Smith, A.G. (Eds.), Geologic Time Scale, Cambridge University Press, Cambridge.

Clague, John et al. (2006) "Open Letter by INQUA Executive Committee " Quaternary Perspective, the INQUA Newsletter International Union for Quaternary Research 16(1)