Ronnas, P. (1987). The subsidiary food crop sector in Sri Lanka. Stockholm, Sweden: Handelshögskolan I Stockholm.
Citación estilo ChicagoRonnas, Per. The Subsidiary Food Crop Sector in Sri Lanka. Stockholm, Sweden: Handelshögskolan I Stockholm, 1987.
Cita MLARonnas, Per. The Subsidiary Food Crop Sector in Sri Lanka. Stockholm, Sweden: Handelshögskolan I Stockholm, 1987.
Precaución: Estas citas no son 100% exactas.