IMPEY, Chris David; HARDEGREE-ULLMAN, Kevin K.; PATIKKAL, Anand; AUSTIN, Carmen L. Teach Astronomy A Comprehensive Online Astronomy Education and Outreach Resource. International Journal for Innovation Education and Research, Dhaka, Bangladesh, v. 4, n. 10, p. 117–127, 2016. DOI: 10.31686/ijier.vol4.iss10.603. Disponível em: https://scholarsjournal.net/index.php/ijier/article/view/603. Acesso em: 11 feb. 2026.