Παραπομπή APA

Norman Hudson. (1991). FAO soils bulletin N.64: A study of the reasons for success or failure of soil conservation projects. Rome: FAO.

Παραπομπή Chicago Style

Norman Hudson. FAO Soils Bulletin N.64: A Study of the Reasons for Success or Failure of Soil Conservation Projects. Rome: FAO, 1991.

Παραπομπή MLA

Norman Hudson. FAO Soils Bulletin N.64: A Study of the Reasons for Success or Failure of Soil Conservation Projects. Rome: FAO, 1991.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.