Tolba, M. K. (1992). Saving our planet: Challenges and hopes. Chapman & Hall.
Chicago Style aipamenaTolba, Mostafa Kamal. Saving Our Planet: Challenges and Hopes. London: Chapman & Hall, 1992.
MLA aipamenaTolba, Mostafa Kamal. Saving Our Planet: Challenges and Hopes. Chapman & Hall, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.