APA
u.s.dept.of agriculture, .manual for testing agricultural and vegetable seads u.s.dept.of agriculture. 1st ed. | Washington U.S.Dept.agriculture: .
Chicago
u.s.dept.of agriculture, .manual for testing agricultural and vegetable seads u.s.dept.of agriculture. 1st ed. | Washington U.S.Dept.agriculture: .
Harvard
u.s.dept.of agriculture, .manual for testing agricultural and vegetable seads u.s.dept.of agriculture. 1st ed. | Washington U.S.Dept.agriculture: .
MLA
u.s.dept.of agriculture, .1st ed. | Washington U.S.Dept.agriculture: . .