1. AASHTO. 1993. Guide for Design of Pavement Structures. Volumes I & II. Washington, D. C: Joint Force on Pavements, Highway Sub-committee on Design.
2. AASHTO. 2003. Standard Method of Test for Determining the Resilient Modulus of Soils and Aggregate Materials. Washington, D. C: AASHTO T307-99.
3. AASHTO. 2020. Mechanistic-Empirical Pavement Design Guide: A Manual of Practice. Washington, DC: American Association of State Highway and Transportation Officials.
4. ASTM. 2018. Standard Specification for Aggregate for Masonry Mortar. West Conshohocken, PA: ASTM C144-18.
5. ASTM. 2019. Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates. West Conshohocken, PA: ASTM C136-19.