Coba jelasin Rujukan dari Tangga jarak kosmos dalam bahasa melayu dong

An Introduction to Modern Astrophysics, Carroll and Ostlie, copyright 2007.

Measuring the Universe The Cosmological Distance Ladder, Stephen Webb, copyright 2001.

Pasachoff, JM & Filippenko, AV, The Cosmos: Astronomy in the New Millennium, Cambridge: Cambridge University Press, 4th edition, 2013 .

The Astrophysical Journal, The Globular Cluster Luminosity Function as a Distance Indicator: Dynamical Effects, Ostriker and Gnedin, May 5, 1997.

An Introduction to Distance Measurement in Astronomy, Richard de Grijs, Chichester: John Wiley & Sons, 2011, .