MLA

Products Laboratory (U.S.), Forest, 1894- Norris, and P. F McKinnon. Compression, Tension, and Shear Tests On Yellow-poplar Plywood Panels of Sizes That Do Not Buckle with Tests Made At Various Angles to the Face Grain. : Madison, Wis. : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1956.