APA aipamena

National Council of Educational Research and Training. (2017). NCERT SCIENCE: TEXT BOOK for Class IX.

Chicago Style aipamena

National Council of Educational Research and Training. NCERT SCIENCE: TEXT BOOK for Class IX. 2017.

MLA aipamena

National Council of Educational Research and Training. NCERT SCIENCE: TEXT BOOK for Class IX. 2017.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.