Citazione APA

International Grassland Congress Pennsylvania, & International Grassland Congress. (1952). Proccedings of the sixth international grassland congress. Pennsylvania: Pennsylvania State College.

Stile di citazione Chicago

International Grassland Congress Pennsylvania, e International Grassland Congress. Proccedings of the Sixth International Grassland Congress. Pennsylvania: Pennsylvania State College, 1952.

Citazione MLA

International Grassland Congress Pennsylvania, e International Grassland Congress. Proccedings of the Sixth International Grassland Congress. Pennsylvania: Pennsylvania State College, 1952.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.