APA (7 ম সংস্করণ) উদ্ধৃতি

Alfthan, T., & Gagliardi, R. (1995). Environmental training: Policy and practice for sustainable development. Oxford and IBH Publication.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Alfthan, Torkel, এবং Raul Gagliardi. Environmental Training: Policy and Practice for Sustainable Development. New Delhi: Oxford and IBH Publication, 1995.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Alfthan, Torkel, এবং Raul Gagliardi. Environmental Training: Policy and Practice for Sustainable Development. Oxford and IBH Publication, 1995.