APA (7 ম সংস্করণ) উদ্ধৃতি

Norman, D. W. (1973). Economic analysis of agricultural production and labour utilisation among the Hausa in the North of Nigeria. Dept. of Agricultural Economics.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Norman, D. W. Economic Analysis of Agricultural Production and Labour Utilisation Among the Hausa in the North of Nigeria. [East Lansing: Dept. of Agricultural Economics, 1973.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Norman, D. W. Economic Analysis of Agricultural Production and Labour Utilisation Among the Hausa in the North of Nigeria. Dept. of Agricultural Economics, 1973.