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Bared, Joe; Powell, Alvin; Kaisar, Evangelos; Jagannathan, Ramanujan (May 2005). "Crash Comparison of Single Point and Tight Diamond Interchanges". Journal of Transportation Engineering. 131 (5). American Society of Civil Engineers: 379–381. doi:10.1061/(ASCE)0733-947X(2005)131:5(379). ISSN0733-947X. S2CID110625815.
Qureshi, Mohammad; Sugathan, Navin; Lasod, Rohit; Spring, Gary (September 2004). "Design of Single Point Urban Interchanges, Research Investigation 02-015"(PDF). Missouri Department of Transportation Research, Development, and Technology, University of Missouri-Rolla. Archived(PDF) from the original on May 30, 2010. Retrieved February 10, 2010.
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Bonneson, James A. (January 1993). "Bridge Size and Clearance Time of Single Point Urban Interchange". Journal of Transportation Engineering. 119 (1). American Society of Civil Engineers: 77–93. doi:10.1061/(ASCE)0733-947X(1993)119:1(77). ISSN0733-947X.
Bared, Joe; Powell, Alvin; Kaisar, Evangelos; Jagannathan, Ramanujan (May 2005). "Crash Comparison of Single Point and Tight Diamond Interchanges". Journal of Transportation Engineering. 131 (5). American Society of Civil Engineers: 379–381. doi:10.1061/(ASCE)0733-947X(2005)131:5(379). ISSN0733-947X. S2CID110625815.