Cita APA (7a ed.)

RAY, S. (2014). OUR EARTH: A BOOK OF GEOGRAPHY - 4. FRANK EDUCATIONAL AIDS.

Cita Chicago Style (17a ed.)

RAY, SUMITRA. OUR EARTH: A BOOK OF GEOGRAPHY - 4. FRANK EDUCATIONAL AIDS, 2014.

Cita MLA (9a ed.)

RAY, SUMITRA. OUR EARTH: A BOOK OF GEOGRAPHY - 4. FRANK EDUCATIONAL AIDS, 2014.