(1964). Derwent system of construction: Information contract procedure and specifications. Vic Hallam.
Citazione stile Chigago Style (17a edizione)Derwent System of Construction: Information Contract Procedure and Specifications. Nottingham: Vic Hallam, 1964.
Citatione MLA (9a ed.)Derwent System of Construction: Information Contract Procedure and Specifications. Vic Hallam, 1964.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.