Tohutoro APA (7th ed.)
Letterman, R. D. Water Quality and Treatment: A Handbook of Community Water Supplies (5a edición.). McGraw-Hill.
Tohutoru Kātū Chicago (17th ed.)
Letterman, Raymond D. Water Quality and Treatment: A Handbook of Community Water Supplies. 5a edición. Nueva York, EUA: McGraw-Hill.
Tohutoro MLA (9th ed.)
Letterman, Raymond D. Water Quality and Treatment: A Handbook of Community Water Supplies. 5a edición. McGraw-Hill.
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