Gaya APA

Lauer, R, H., Lauer, J, C. (2008). Social Problems and the Quality of Life (11 -). Boston: Mc Graw Hill.

Gaya MLA

Lauer, Robert, H.., Lauer, Jeanette, C.. "Social Problems and the Quality of Life". 11 - Boston: Mc Graw Hill, 2008. Text.