APA (7th ed.) Citation

Danziger, P., & Martin, A. M. (1999). P.S. Longer Letter Later. Scholastic.

Chicago Style (17th ed.) Citation

Danziger, Paula, and Ann M. Martin. P.S. Longer Letter Later. Scholastic, 1999.

MLA (8th ed.) Citation

Danziger, Paula, and Ann M. Martin. P.S. Longer Letter Later. Scholastic, 1999.

Warning: These citations may not always be 100% accurate.