H. F. Evans, "Architecture of Sunday Schools" in The Encyclopedia of Sunday Schools and Religious Education, ed. by John T. McFarland and Benjamin S. Winchester, (1915). pp. 28–55 online.
Norström, Per (1930-11-01). "Söndagsskolans historia". Evangeliskt vittnesbörd (in Swedish). No. 21. p. 163. Archived from the original on 2022-05-01. Retrieved 2022-05-01.
Norström, Per (1930-11-01). "Söndagsskolans historia". Evangeliskt vittnesbörd (in Swedish). No. 21. p. 163, 166. Archived from the original on 2022-05-01. Retrieved 2022-05-01.
Norström, Per (1930-11-15). "Söndagsskolans historia". Evangeliskt vittnesbörd (in Swedish). No. 22. p. 171. Archived from the original on 2022-05-01. Retrieved 2022-05-01.
Glenn A. Jent, "Some Thoughts about Sunday School: An Analysis of the Views of Selected Celebrated and Noncelebrated Persons" (DEd disertation, New Orleans Baptist Theological Seminary; ProQuest Dissertations Publishing, 1983. 8320587) online.
Norström, Per (1930-11-01). "Söndagsskolans historia". Evangeliskt vittnesbörd (in Swedish). No. 21. p. 163. Archived from the original on 2022-05-01. Retrieved 2022-05-01.
"Söndagsskola". Förvaltningshistorisk ordbok (in Swedish). Archived from the original on 2021-05-10. Retrieved 2022-05-01.
Norström, Per (1930-11-01). "Söndagsskolans historia". Evangeliskt vittnesbörd (in Swedish). No. 21. p. 163, 166. Archived from the original on 2022-05-01. Retrieved 2022-05-01.
Norström, Per (1930-11-15). "Söndagsskolans historia". Evangeliskt vittnesbörd (in Swedish). No. 22. p. 171. Archived from the original on 2022-05-01. Retrieved 2022-05-01.