Gaya APA

GAFF, J. (2001). I WONDER WHY: MOUNTAINS HAVE SNOW ON TOP AND OTHER QUESTIONS ABOUT MOUNTAINS . INGGRIS: kingsfisher publications.

Gaya MLA

GAFF, JACKIE. "I WONDER WHY: MOUNTAINS HAVE SNOW ON TOP AND OTHER QUESTIONS ABOUT MOUNTAINS". INGGRIS: kingsfisher publications, 2001. Text.