APA

Coleman E., Nixon P., . (1974). Survey of possible sources in Wales of raw materials for the manufacture of a lightweight expanded slate aggregate. Garston, Watford: Building Research Establishment. Current paper nr 78/74.

Chicago

Coleman EH, Nixon PJ, . 1974. Survey of possible sources in Wales of raw materials for the manufacture of a lightweight expanded slate aggregate. Garston, Watford: Building Research Establishment. Current paper nr 78/74.

Harvard

Coleman E., Nixon P., . (1974). Survey of possible sources in Wales of raw materials for the manufacture of a lightweight expanded slate aggregate. Garston, Watford: Building Research Establishment. Current paper nr 78/74.

MLA

Coleman EH, Nixon PJ, . Survey of possible sources in Wales of raw materials for the manufacture of a lightweight expanded slate aggregate. Garston, Watford: Building Research Establishment. Current paper nr 78/74. 1974.