Four Great Inventions (English Wikipedia)

Barnard, Frederick Augustus Porter; Arnold Guyot (1880). Johnson's New universal cyclopædia: a scientific and popular treasury of useful knowledge... Vol. 1, Part 2 of Johnson's New Universal Cyclopædia: A Scientific and Popular Treasury of Useful Knowledge. A.J. Johnson & Co. p. 924. Retrieved 2011-11-28.
"C.L.S.C. Notes on required readings for October". The Chautauquan. Vol. 8, no. 1. 1887. p. 59. Retrieved 2011-11-28.
"Some Fundamental Ideas of Chinese Culture, Clark University (Worcester, Mass.) (1915). The Journal of international relations, Volume 5. p. 171. Retrieved 2011-11-28.

britannica.com

Andrade, Tonio (2016-01-12). The Gunpowder Age: China, Military Innovation, and the Rise of the West in World History. Princeton University Press. doi:10.2307/j.ctvc77j74. ISBN 978-1-4008-7444-6. JSTOR j.ctvc77j74.
Seow, Victor (3 July 2022). "A Tradition of Invention: The Paradox of Glorifying Past Technological Breakthroughs". East Asian Science, Technology and Society. 16 (3): 349–366. doi:10.1080/18752160.2022.2095103.
Shu-hua, Li (July 1954). "Origine de la Boussole 11. Aimant et Bousso". Isis. 45. Oxford: Oxford Student Publications: 175–196. doi:10.1086/348315. S2CID 143585290.
Kreutz, Barbara M. (July 1973). "Mediterranean Contributions to the Medieval Mariner's Compass". Technology and Culture. 14 (3): 373. doi:10.2307/3102323. JSTOR 3102323. S2CID 111540460. (note 21)

Shu-hua, Li (July 1954). "Origine de la Boussole 11. Aimant et Bousso". Isis. 45. Oxford: Oxford Student Publications: 175–196. doi:10.1086/348315. S2CID 143585290.

Andrade, Tonio (2016-01-12). The Gunpowder Age: China, Military Innovation, and the Rise of the West in World History. Princeton University Press. doi:10.2307/j.ctvc77j74. ISBN 978-1-4008-7444-6. JSTOR j.ctvc77j74.
Kreutz, Barbara M. (July 1973). "Mediterranean Contributions to the Medieval Mariner's Compass". Technology and Culture. 14 (3): 373. doi:10.2307/3102323. JSTOR 3102323. S2CID 111540460. (note 21)

"Four Great Inventions of China". Embassy of the People's Republic of China in Antigua and Barbuda. November 12, 2013. Archived from the original on 2022-03-17.

Shu-hua, Li (July 1954). "Origine de la Boussole 11. Aimant et Bousso". Isis. 45. Oxford: Oxford Student Publications: 175–196. doi:10.1086/348315. S2CID 143585290.
Kreutz, Barbara M. (July 1973). "Mediterranean Contributions to the Medieval Mariner's Compass". Technology and Culture. 14 (3): 373. doi:10.2307/3102323. JSTOR 3102323. S2CID 111540460. (note 21)

World Archaeological Congress ENewsletter. Vol. 11. August 2006 https://web.archive.org/web/20071106073725/http://www.worldarchaeologicalcongress.org/site/newsletters_11.php. Archived from the original on 2007-11-06. Retrieved 2007-11-11. {{cite magazine}}: Missing or empty |title= (help)
"Four Great Inventions of China". Embassy of the People's Republic of China in Antigua and Barbuda. November 12, 2013. Archived from the original on 2022-03-17.
""Four Great Inventions of Ancient China" stamp issue". Hongkong Post. 2008-11-20. Archived from the original on 20 November 2008.
"Four Great Inventions of Ancient China" Special Stamps Issuing Ceremony Archived 2008-11-20 at the Wayback Machine, Hongkong Post

World Archaeological Congress ENewsletter. Vol. 11. August 2006 https://web.archive.org/web/20071106073725/http://www.worldarchaeologicalcongress.org/site/newsletters_11.php. Archived from the original on 2007-11-06. Retrieved 2007-11-11. {{cite magazine}}: Missing or empty |title= (help)