Ayres, Q. C. (1939). Land drainage and reclamation (2a. ed.). McGraw-Hill.
Chicago Style (17th ed.) ZitazioaAyres, Quincy Claude. Land Drainage and Reclamation. 2a. ed. Nueva York: McGraw-Hill, 1939.
MLA (9th ed.) ZitazioaAyres, Quincy Claude. Land Drainage and Reclamation. 2a. ed. McGraw-Hill, 1939.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.