(1969). Equipment manual of instruction (6th.). Sacramento, CA: State of California. Business and Transportation Agency. Department of Public Works. Division of Highways.
Παραπομπή Chicago StyleEquipment Manual of Instruction. 6th. Sacramento, CA: State of California. Business and Transportation Agency. Department of Public Works. Division of Highways, 1969.
Παραπομπή MLAEquipment Manual of Instruction. 6th. Sacramento, CA: State of California. Business and Transportation Agency. Department of Public Works. Division of Highways, 1969.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.