APA (7 ম সংস্করণ) উদ্ধৃতি

Arvidsson, H. (2001). Wood ash application in spruce stands: Effects on ground vegetation, tree nutrient status and soil chemistry. Swedish University of Agricultural Sciences.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Arvidsson, Helen. Wood Ash Application in Spruce Stands: Effects on Ground Vegetation, Tree Nutrient Status and Soil Chemistry. Uppsala: Swedish University of Agricultural Sciences, 2001.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Arvidsson, Helen. Wood Ash Application in Spruce Stands: Effects on Ground Vegetation, Tree Nutrient Status and Soil Chemistry. Swedish University of Agricultural Sciences, 2001.