APA (7th ed.) Citation

Riding, L. (1993). Four unposted letters to Catherine. Persea Books.

Chicago Style (17th ed.) Citation

Riding, Laura. Four Unposted Letters to Catherine. New York: Persea Books, 1993.

MLA (9th ed.) Citation

Riding, Laura. Four Unposted Letters to Catherine. Persea Books, 1993.

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