Cita APA

Allen, S. W., & Wilkinson Leonard, W. (1966). Conserving natural resourses. New York: McGraw-Hill.

Citación estilo Chicago

Allen, Shirley Walter, y Walter Wilkinson Leonard. Conserving Natural Resourses. New York: McGraw-Hill, 1966.

Cita MLA

Allen, Shirley Walter, y Walter Wilkinson Leonard. Conserving Natural Resourses. New York: McGraw-Hill, 1966.