APA (7th ed.) Citation

Axelrod, A., & Phillips, C. (1993). The environmentalists: A biographical dictionary from the 17th century to the present. Facts on File.

Chicago Style (17th ed.) Citation

Axelrod, Alan, and Charles Phillips. The Environmentalists: A Biographical Dictionary from the 17th Century to the Present. New York: Facts on File, 1993.

MLA (9th ed.) Citation

Axelrod, Alan, and Charles Phillips. The Environmentalists: A Biographical Dictionary from the 17th Century to the Present. Facts on File, 1993.