Johnson, Jarrett L. Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;
Johnson, J. L. (2010). Observational signatures of the first galaxies. In D. J., Whalen, V., Bromm, & N., Yoshida (Eds.), The First Stars and Galaxies: Challenges for the Next Decade (pp. 190-195).