(2005). National geographic: Stem cells how far will we go? Washington, DC: National Geographic Society.
Chicago Style aipamenaNational Geographic: Stem Cells How Far Will We Go? Washington, DC: National Geographic Society, 2005.
MLA aipamenaNational Geographic: Stem Cells How Far Will We Go? Washington, DC: National Geographic Society, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.