Hitchcock, A. S. (1971). Manual of the grasses of the United States (2. ed.). Dover.
Chicago Style (17th ed.) CitationHitchcock, A. S. Manual of the Grasses of the United States. 2. ed. New York: Dover, 1971.
MLA (9th ed.) CitationHitchcock, A. S. Manual of the Grasses of the United States. 2. ed. Dover, 1971.