APA

AMERICAN PUBLIC HEALT ASSOCIATION (USA), . (1989). STANDARD METHODS: FOR THE EXAMINATION OF WATER AND WASTEWATER. USA: AMERICAN PUBLIC HEALTH ASSOCIATION.

Chicago

AMERICAN PUBLIC HEALT ASSOCIATION (USA), . 1989. STANDARD METHODS: FOR THE EXAMINATION OF WATER AND WASTEWATER. USA: AMERICAN PUBLIC HEALTH ASSOCIATION.

Harvard

AMERICAN PUBLIC HEALT ASSOCIATION (USA), . (1989). STANDARD METHODS: FOR THE EXAMINATION OF WATER AND WASTEWATER. USA: AMERICAN PUBLIC HEALTH ASSOCIATION.

MLA

AMERICAN PUBLIC HEALT ASSOCIATION (USA), . STANDARD METHODS: FOR THE EXAMINATION OF WATER AND WASTEWATER. USA: AMERICAN PUBLIC HEALTH ASSOCIATION. 1989.