Shree Book Centre. (2019). 501 Incredible Facts (2019.). Shree Book Centre.
Cita Chicago (17th ed.)Shree Book Centre. 501 Incredible Facts. 2019. Shree Book Centre, 2019.
Cita MLA (9th ed.)Shree Book Centre. 501 Incredible Facts. 2019. Shree Book Centre, 2019.
Atenció: Aquestes cites poden no estar 100% correctes.