Gaya APA

Lukens, R, P. (1980). 1980: Annual Book of ASTM Standards Concrete and Mineral Aggregates (Including Manual of Aggregate and Concrete Testing) . : American Society for Testing and Materials.

Gaya MLA

Lukens, Robert, P.. "1980: Annual Book of ASTM Standards Concrete and Mineral Aggregates (Including Manual of Aggregate and Concrete Testing)". : American Society for Testing and Materials, 1980. Text.