APA (7th ed.) Citation

Hughes, D. B. (2018). The so blue marble. Penzler Publishers.

Chicago Style (17th ed.) Citation

Hughes, Dorothy B. The so Blue Marble. New York: Penzler Publishers, 2018.

MLA (8th ed.) Citation

Hughes, Dorothy B. The so Blue Marble. Penzler Publishers, 2018.

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