Cita APA (7th ed.)

COVEN, W. (2012). HEIDI HECKELBECK AND THE CHRISTMAS SURPRISE # 9. LITTLE SIMON.

Cita Chicago (17th ed.)

COVEN, WANDA. HEIDI HECKELBECK AND THE CHRISTMAS SURPRISE # 9. NEW YORK: LITTLE SIMON, 2012.

Cita MLA (9th ed.)

COVEN, WANDA. HEIDI HECKELBECK AND THE CHRISTMAS SURPRISE # 9. LITTLE SIMON, 2012.