Gaya APA

TUFTY, B. (1969). Barbara Tufty 1001 Questions Answere About Earhquakes, Avalanches, Floods and Onther Natural Disasters . New York: Dover Publications.

Gaya MLA

TUFTY, BARBARA. "Barbara Tufty 1001 Questions Answere About Earhquakes, Avalanches, Floods and Onther Natural Disasters". New York: Dover Publications, 1969. Text.