Gaya APA

DANZIGER, P., Martin, A, M. (1999). P.S. LONGER LETTER LATER / Paula Danziger, Ann M. Martin . New York: Scholastic Inc..

Gaya MLA

DANZIGER, Paula., Martin, Ann, M.. "P.S. LONGER LETTER LATER / Paula Danziger, Ann M. Martin". New York: Scholastic Inc., 1999. Text.