Hain, R. M. (1987). The Geometry of the Mixed Hodge Structure on the Fundamental Group. In Algebraic geometry, Bowdoin, 1985 (Brunswick, Maine, 1985) (Vol. 46, pp. 247–282). Providence, RI: American Mathematical Society.

Hain, R. M. “The Geometry of the Mixed Hodge Structure on the Fundamental Group.” In Algebraic Geometry, Bowdoin, 1985 (Brunswick, Maine, 1985), 46:247–82. Providence, RI: American Mathematical Society, 1987.

Hain RM. The Geometry of the Mixed Hodge Structure on the Fundamental Group. In: Algebraic geometry, Bowdoin, 1985 (Brunswick, Maine, 1985). Providence, RI: American Mathematical Society; 1987. p. 247–82.

Hain, R. M. “The Geometry of the Mixed Hodge Structure on the Fundamental Group.” Algebraic Geometry, Bowdoin, 1985 (Brunswick, Maine, 1985), vol. 46, American Mathematical Society, 1987, pp. 247–82.

Hain RM. The Geometry of the Mixed Hodge Structure on the Fundamental Group. Algebraic geometry, Bowdoin, 1985 (Brunswick, Maine, 1985). Providence, RI: American Mathematical Society; 1987. p. 247–282.