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AMA style

David Weinberg. "Definition of Cyclic twins". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 04:48 UTC. Available at: http://m.alexandrite.net/viewpage.html?id=GG-088-00012. Accessed May 21, 2026.

APA style

"Definition of Cyclic twins". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 18:04, May 21, 2026, from http://m.alexandrite.net/viewpage.html?id=GG-088-00012.

Bluebook style

"Definition of Cyclic twins", http://m.alexandrite.net/viewpage.html?id=GG-088-00012 (last visited May 21, 2026).

Bluebook: Harvard JOLT style

See Alexandrite Tsarstone Collectors Guide, "Definition of Cyclic twins", http://m.alexandrite.net/viewpage.html?id=GG-088-00012 (Repeated twining that tends to produce circular forms according to the same twin law but with the twin axis or twin planes, such as chrysoberyl or aragonite crystals having a pseudohexagonal symmetry.) (as of May. 21, 2026, 18:04 GMT).

CBE/CSE style

David Weinberg. "Definition of Cyclic twins". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 04:48 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 04:48 UTC [cited 2026 May 21]. Available from: http://m.alexandrite.net/viewpage.html?id=GG-088-00012.

Chicago style

David Weinberg, "Definition of Cyclic twins", http://m.alexandrite.net/viewpage.html?id=GG-088-00012, (accessed May 21, 2026).

MLA style

"Definition of Cyclic twins". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 04:48 UTC. 21 May 2026 http://m.alexandrite.net/viewpage.html?id=GG-088-00012

MHRA style

David Weinberg, "Definition of Cyclic twins", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 04:48 UTC, http://m.alexandrite.net/viewpage.html?id=GG-088-00012 [accessed 21 May 2026].