Standard [from Electronic source using APA 5th ed.]
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In the UK, these are mostly the responsibility of the British Standards Institute, which becomes a corporate author of the document. Standards are identified by a number, which becomes the first part of the title. In APA, if the publisher is the same as the corporate author, use Author in place of the publisher.
British Standards from British Standards Online are delivered electronically as PDF files. If this was the format of the source you consulted, insert [Electronic version] after the title of the standard.
Name of authorising organisation. (year). Number of standard: title of standard [Electronic version]. Place of publication: Publisher.
British Standards Institute. (2002). BS EN ISO 11623: Transportable gas cylinders: periodic inspection and testing of composite gas cylinders [Electronic version]. London: Author.
Citation in Text
There is a procedure for internal visual inspection (British Standards Institute, 2002, p. 14) which it is desirable ...