Cita APA (7th ed.)

NCERT. (2007). SCIENCE TEXTBOOK FOR CLASS - VII. NCERT.

Cita Chicago (17th ed.)

NCERT. SCIENCE TEXTBOOK FOR CLASS - VII. NEW DELHI: NCERT, 2007.

Cita MLA (9th ed.)

NCERT. SCIENCE TEXTBOOK FOR CLASS - VII. NCERT, 2007.