B) Give the type of style references as shown bellow: 1. Al-Khazraji Hayder, Benkemoun Nathan, Choinska Marta, and Khelidj Ab-delhafid. Meso-scale analysis of the aggregate size influence on the mechanical properties of heterogeneous materials using the brazilian splitting test.Energy Procedia, 139:266-272, 2017. 2. Hayder AK, Nathan B, Marta C, Abdelhafid K. Meso-scale analysis of the aggregate size influence on the mechanical properties of heterogeneous materials using the Brazilian splitting test. Energy Procedia. 2017;139:266-272. 3. Hayder, A.-K., Nathan, B., Marta, C. \& Abdelhafid, K. (2017), 'Meso-scale analysis of the aggregate size influence on the mechanical properties of heterogeneous materials using the brazilian splitting test',Energy Procedia139, 266-272. 4. Hayder, A.-K., B. Nathan, C. Marta, and K. Abdelhafid (2017). Meso-scale analysis of the aggregate size influence on the mechanical properties of heterogeneous materials using the brazilian splitting test. Energy Procedia 139,266-272.