{{Cite conference| publisher = BRGM - Service géologique national| last1 = Herrouin| first1 = Yves| last2 = Dadet| first2 = Paul| last3 = Bardy| first3 = P.| last4 = Lebret| first4 = F.| last5 = Trautmann| first5 = F.| last6 = Carn| first6 = A.| title = Notice explicative de la Feuille 387 - Pipriac| location = Orléans| series = Carte géol. France (1/50 000)| date = 1995}}