Cita APA (7th ed.)

Bittinger, J. (2000). Happy times: Student's book 6. MacMillan.

Cita Chicago (17th ed.)

Bittinger, Judie. Happy Times: Student's Book 6. Oxford: MacMillan, 2000.

Cita MLA (9th ed.)

Bittinger, Judie. Happy Times: Student's Book 6. MacMillan, 2000.