APA

(1948). GRASS THE YEARBOOK OF AGRICULTURE 1948. ESTADOS UNIDOS DE AMERICA: DEPARTMENT OF AGRICULTURE.

Chicago

1948. GRASS THE YEARBOOK OF AGRICULTURE 1948. ESTADOS UNIDOS DE AMERICA: DEPARTMENT OF AGRICULTURE.

Harvard

(1948). GRASS THE YEARBOOK OF AGRICULTURE 1948. ESTADOS UNIDOS DE AMERICA: DEPARTMENT OF AGRICULTURE.

MLA

GRASS THE YEARBOOK OF AGRICULTURE 1948. ESTADOS UNIDOS DE AMERICA: DEPARTMENT OF AGRICULTURE. 1948.