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AMA style

David Weinberg. "Asbjorn Halvorsen". In Alexandrite Tsarstone Collectors Guide. September 03, 2011, 08:20 UTC. Available at: http://m.alexandrite.net/viewpage.html?id=WP-017-00048. Accessed June 10, 2026.

APA style

"Asbjorn Halvorsen". (2011, September 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 23:01, June 10, 2026, from http://m.alexandrite.net/viewpage.html?id=WP-017-00048.

Bluebook style

"Asbjorn Halvorsen", http://m.alexandrite.net/viewpage.html?id=WP-017-00048 (last visited June 10, 2026).

Bluebook: Harvard JOLT style

See Alexandrite Tsarstone Collectors Guide, "Asbjorn Halvorsen", http://m.alexandrite.net/viewpage.html?id=WP-017-00048 (Description may include but is not limited to: an abstract, a table of contents, a graphical representation, or a free-text account of the resource.) (as of Jun. 10, 2026, 23:01 GMT).

CBE/CSE style

David Weinberg. "Asbjorn Halvorsen". In Alexandrite Tsarstone Collectors Guide. 2011 Sep 03, 08:20 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2011 Sep 03, 08:20 UTC [cited 2026 Jun 10]. Available from: http://m.alexandrite.net/viewpage.html?id=WP-017-00048.

Chicago style

David Weinberg, "Asbjorn Halvorsen", http://m.alexandrite.net/viewpage.html?id=WP-017-00048, (accessed June 10, 2026).

MLA style

"Asbjorn Halvorsen". Alexandrite Tsarstone Collectors Guide. 03 Sep 2011, 08:20 UTC. 10 Jun 2026 http://m.alexandrite.net/viewpage.html?id=WP-017-00048

MHRA style

David Weinberg, "Asbjorn Halvorsen", Alexandrite Tsarstone Collectors Guide, 03 September 2011, 08:20 UTC, http://m.alexandrite.net/viewpage.html?id=WP-017-00048 [accessed 10 June 2026].