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AMA style

David Weinberg. "Multicolour Gems". In Alexandrite Tsarstone Collectors Guide. August 12, 2011, 01:14 UTC. Available at: http://w.alexandrite.com/viewpage.html?id=WDD-003-00001. Accessed April 06, 2026.

APA style

"Multicolour Gems". (2011, August 12). In Alexandrite Tsarstone Collectors Guide. Retrieved 20:26, April 06, 2026, from http://w.alexandrite.com/viewpage.html?id=WDD-003-00001.

Bluebook style

"Multicolour Gems", http://w.alexandrite.com/viewpage.html?id=WDD-003-00001 (last visited April 06, 2026).

Bluebook: Harvard JOLT style

See Alexandrite Tsarstone Collectors Guide, "Multicolour Gems", http://w.alexandrite.com/viewpage.html?id=WDD-003-00001 () (as of Apr. 06, 2026, 20:26 GMT).

CBE/CSE style

David Weinberg. "Multicolour Gems". In Alexandrite Tsarstone Collectors Guide. 2011 Aug 12, 01:14 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2011 Aug 12, 01:14 UTC [cited 2026 Apr 06]. Available from: http://w.alexandrite.com/viewpage.html?id=WDD-003-00001.

Chicago style

David Weinberg, "Multicolour Gems", http://w.alexandrite.com/viewpage.html?id=WDD-003-00001, (accessed April 06, 2026).

MLA style

"Multicolour Gems". Alexandrite Tsarstone Collectors Guide. 12 Aug 2011, 01:14 UTC. 06 Apr 2026 http://w.alexandrite.com/viewpage.html?id=WDD-003-00001

MHRA style

David Weinberg, "Multicolour Gems", Alexandrite Tsarstone Collectors Guide, 12 August 2011, 01:14 UTC, http://w.alexandrite.com/viewpage.html?id=WDD-003-00001 [accessed 06 April 2026].