Singleton, D., & Lengyel, Z. (1995). The age factor in second language acquisition: A critical look at the critical period hypothesis. Muktilingual Matters LTD.
Citace podle Chicago (17th ed.)Singleton, David, a Zsolt Lengyel. The Age Factor in Second Language Acquisition: A Critical Look at the Critical Period Hypothesis. Clevedon: Muktilingual Matters LTD, 1995.
Citace podle MLA (9th ed.)Singleton, David, a Zsolt Lengyel. The Age Factor in Second Language Acquisition: A Critical Look at the Critical Period Hypothesis. Muktilingual Matters LTD, 1995.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..