APA (7th ed.) Citation

De Grummond, L. Y., & Delaune, L. d. G. (1968). Jean Felix Piccard, boy balloonist. Bobbs-Merrill.

Chicago Style (17th ed.) Citation

De Grummond, Lena Young, and Lynn de Grummond Delaune. Jean Felix Piccard, Boy Balloonist. New York: Bobbs-Merrill, 1968.

MLA (9th ed.) Citation

De Grummond, Lena Young, and Lynn de Grummond Delaune. Jean Felix Piccard, Boy Balloonist. Bobbs-Merrill, 1968.