Sagan, C. (1982). Cosmos. Planeta.
Tohutoru Kātū Chicago (17th ed.)Sagan, Carl. Cosmos. Barcelona: Planeta, 1982.
Tohutoro MLA (9th ed.)Sagan, Carl. Cosmos. Planeta, 1982.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.
Tohutoro APA (7th ed.)