Verne, J., & Gray, E. A journey to the centre of the earth: Activity book.
Chicago Style (17th ed.) CitationVerne, Jules, and Elizabeth Gray. A Journey to the Centre of the Earth: Activity Book.
MLA (9th ed.) CitationVerne, Jules, and Elizabeth Gray. A Journey to the Centre of the Earth: Activity Book.
Warning: These citations may not always be 100% accurate.