Rigel, D. S. (1999, 21. July). Sunburn Risk at High Altitudes Greater Than Most Realize. Zugriff unter http://pharmacotherapy.medscape.com/lww/smd/1999/v21.n02/smd2102.03.html
APA (7th ed.) CitationRigel, D. S. Sunburn Risk at High Altitudes Greater Than Most Realize.
Chicago Style (17th ed.) CitationRigel, D. S. Sunburn Risk at High Altitudes Greater Than Most Realize.
MLA (9th ed.) CitationRigel, D. S. Sunburn Risk at High Altitudes Greater Than Most Realize.
Warning: These citations may not always be 100% accurate.