^Estève E, Saudeau L, Pierre F, Barruet K, Vaillant L, Lorette G. Physiological cutaneous signs in normal pregnancy: a study of 60 pregnant women. Ann Dermatol Venereol. 1994, 121 (3): 227–231. PMID 7832550(法语).
^[http://pregnancyandb
aby.com/pregnancy/baby/Whats-my-line-All-about-the-linea-nigra-4210.htm She Knows Network: "What's that line? All about linea nigra"][永久失效連結]