APA (7 ম সংস্করণ) উদ্ধৃতি

Lean, G. A. (1980). The training of spatial abilities: A bibliography. Mathematics Education Centre, Papua New Guinea University of Technology.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Lean, G. A. The Training of Spatial Abilities: A Bibliography. Lae: Mathematics Education Centre, Papua New Guinea University of Technology, 1980.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Lean, G. A. The Training of Spatial Abilities: A Bibliography. Mathematics Education Centre, Papua New Guinea University of Technology, 1980.