Cita APA (7th ed.)

Maidment St. Stella & Roberts L. Lorena. (2010). Happy Street 1: Class Book. New York, Oxford University Press, 2010.

Cita Chicago (17th ed.)

Maidment St. Stella i Roberts L. Lorena. Happy Street 1: Class Book. New York, Oxford University Press, 2010, 2010.

Cita MLA (9th ed.)

Maidment St. Stella i Roberts L. Lorena. Happy Street 1: Class Book. New York, Oxford University Press, 2010, 2010.