APA (7 ম সংস্করণ) উদ্ধৃতি

Johannisson, C. (1996). [Superscript 15]N abundance as an indicator of N-saturation of coniferous forest. Swedish University of Agricultural Sciences.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Johannisson, Christian. [Superscript 15]N Abundance as an Indicator of N-saturation of Coniferous Forest. Umeå: Swedish University of Agricultural Sciences, 1996.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Johannisson, Christian. [Superscript 15]N Abundance as an Indicator of N-saturation of Coniferous Forest. Swedish University of Agricultural Sciences, 1996.