APA (7 ম সংস্করণ) উদ্ধৃতি

Hämäläinen, M. (1991). Principal variations in the chemical composition of peat. Swedish University of Agricultural Sciences, Dept. of Chemistry.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Hämäläinen, Markku. Principal Variations in the Chemical Composition of Peat. Uppsala, Sweden: Swedish University of Agricultural Sciences, Dept. of Chemistry, 1991.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Hämäläinen, Markku. Principal Variations in the Chemical Composition of Peat. Swedish University of Agricultural Sciences, Dept. of Chemistry, 1991.