MLA

Lewis, Wayne C., 1914-, et al. Supplement to Design of Plywood Webs In Box Beams : Buckling and Ultimate Strengths of Shear Webs of Box Beams Having Plywood Face Grain Direction Parallel Or Perpendicular to the Axis of the Beams. : Madison, Wis. : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1965.