Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.