APA (7 ম সংস্করণ) উদ্ধৃতি

ebrary, Inc, Granena, G., & Long, M. H. (2013). Sensitive periods, language aptitude, and ultimate L2 attainment. John Benjamins Publishing Company.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

ebrary, Inc, Gisela Granena, এবং Michael H. Long. Sensitive Periods, Language Aptitude, and Ultimate L2 Attainment. Amsterdam: John Benjamins Publishing Company, 2013.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

ebrary, Inc, et al. Sensitive Periods, Language Aptitude, and Ultimate L2 Attainment. John Benjamins Publishing Company, 2013.