National Forest Products Association. (1966). Simplified span tables for joists and rafters in residential construction: Appendix A. National Forest Products Association.
Chicago Style (17th ed.) CitationNational Forest Products Association. Simplified Span Tables for Joists and Rafters in Residential Construction: Appendix A. Washington, D.C.: National Forest Products Association, 1966.
MLA (9th ed.) CitationNational Forest Products Association. Simplified Span Tables for Joists and Rafters in Residential Construction: Appendix A. National Forest Products Association, 1966.
Warning: These citations may not always be 100% accurate.