APA-čujuhus (7. p.)

(1964). Derwent system of construction: Information contract procedure and specifications. Vic Hallam.

Chicago-čujuhus (17. p.)

Derwent System of Construction: Information Contract Procedure and Specifications. Nottingham: Vic Hallam, 1964.

MLA-čujuhus (9. p.)

Derwent System of Construction: Information Contract Procedure and Specifications. Vic Hallam, 1964.

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