Παραπομπή APA

(1966). Roof coverings. London: The Council for Codes of Practice British Standards Institution.

Παραπομπή Chicago Style

Roof Coverings. London: The Council for Codes of Practice British Standards Institution, 1966.

Παραπομπή MLA

Roof Coverings. London: The Council for Codes of Practice British Standards Institution, 1966.

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