Cita APA (7th ed.)

Dunrea, O. (2008). Merry Christmas, Ollie! Houghton Mifflin.

Cita Chicago (17th ed.)

Dunrea, Olivier. Merry Christmas, Ollie! Boston: Houghton Mifflin, 2008.

Cita MLA (8th ed.)

Dunrea, Olivier. Merry Christmas, Ollie! Houghton Mifflin, 2008.