APA-viite (7. p.)

Leaver, B. L., & Willis, J. R. (2004). Task-based instruction in foreign language education: Practices and programs. Georgetown University Press.

Chicago-viite (17. p.)

Leaver, Betty Lou, ja Jane R. Willis. Task-based Instruction in Foreign Language Education: Practices and Programs. Washington, D.C.: Georgetown University Press, 2004.

MLA-viite (8. p.)

Leaver, Betty Lou, ja Jane R. Willis. Task-based Instruction in Foreign Language Education: Practices and Programs. Georgetown University Press, 2004.