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AMA style

David Weinberg. "Definition of Magma". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 04:46 UTC. Available at: http://m.alexandrite.net/viewpage.html?id=GG-098-00001. Accessed May 21, 2026.

APA style

"Definition of Magma". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 18:01, May 21, 2026, from http://m.alexandrite.net/viewpage.html?id=GG-098-00001.

Bluebook style

"Definition of Magma", http://m.alexandrite.net/viewpage.html?id=GG-098-00001 (last visited May 21, 2026).

Bluebook: Harvard JOLT style

See Alexandrite Tsarstone Collectors Guide, "Definition of Magma", http://m.alexandrite.net/viewpage.html?id=GG-098-00001 (A naturally occurring molten or semi-molten material in suspension, with dissolved gases, generated within or beneath the earth's crust and capable of intrusion and extrusion. Magma, which is extruded on the surface of the earth is called lava.) (as of May. 21, 2026, 18:01 GMT).

CBE/CSE style

David Weinberg. "Definition of Magma". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 04:46 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 04:46 UTC [cited 2026 May 21]. Available from: http://m.alexandrite.net/viewpage.html?id=GG-098-00001.

Chicago style

David Weinberg, "Definition of Magma", http://m.alexandrite.net/viewpage.html?id=GG-098-00001, (accessed May 21, 2026).

MLA style

"Definition of Magma". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 04:46 UTC. 21 May 2026 http://m.alexandrite.net/viewpage.html?id=GG-098-00001

MHRA style

David Weinberg, "Definition of Magma", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 04:46 UTC, http://m.alexandrite.net/viewpage.html?id=GG-098-00001 [accessed 21 May 2026].