APA-viite

Firor, J., & Jacobsen , J. E. (2002). Crowded greenhouse: Population climate change and creating a sustainabel world. Universities press.

Chicago-tyylinen lähdeviittaus

Firor, John, ja Judith E. Jacobsen. Crowded Greenhouse: Population Climate Change and Creating a Sustainabel World. Hyderabad: Universities press, 2002.

MLA-viite

Firor, John, ja Judith E. Jacobsen. Crowded Greenhouse: Population Climate Change and Creating a Sustainabel World. Universities press, 2002.