Citazione APA

University of Illinois (Urbana-Champaign campus). Elementary-School Science Project & University of Illinois (Urbana-Champaign campus). Elementary-School Science Project. (1962). Astronomy (Rev. ed.). University of Illinois, Elementary School Science Project.

Stile di citazione Chicago

University of Illinois (Urbana-Champaign campus). Elementary-School Science Project e University of Illinois (Urbana-Champaign campus). Elementary-School Science Project. Astronomy. Rev. ed. Urbana, Ill.: University of Illinois, Elementary School Science Project, 1962.

Citazione MLA

University of Illinois (Urbana-Champaign campus). Elementary-School Science Project e University of Illinois (Urbana-Champaign campus). Elementary-School Science Project. Astronomy. Rev. ed. University of Illinois, Elementary School Science Project, 1962.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.