Dept. of Agriculture. (1968). Science for better living. [Washington: For sale by the Supt. Docs., U.S. Govt. Print. Off..
Chicago Style aipamenaDept. of Agriculture. Science for Better Living. [Washington: For sale by the Supt. Docs., U.S. Govt. Print. Off., 1968.
MLA aipamenaDept. of Agriculture. Science for Better Living. [Washington: For sale by the Supt. Docs., U.S. Govt. Print. Off., 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.