APA aipamena

STEELE, H. (1998). GEOLOGY AND CHANGE. TIME LIFE PUBLICATIONS.

Chicago Style aipamena

STEELE, HOPE. GEOLOGY AND CHANGE. ASIA: TIME LIFE PUBLICATIONS, 1998.

MLA aipamena

STEELE, HOPE. GEOLOGY AND CHANGE. TIME LIFE PUBLICATIONS, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.