APA (7th ed.) Citation

Rogers, J. E. (2010). Earth and Sky Every Child Should Know Easy studies of the earth and the stars for any time and place. Project Gutenberg.

Chicago Style (17th ed.) Citation

Rogers, Julia Ellen. Earth and Sky Every Child Should Know Easy Studies of the Earth and the Stars for Any Time and Place. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Rogers, Julia Ellen. Earth and Sky Every Child Should Know Easy Studies of the Earth and the Stars for Any Time and Place. Project Gutenberg, 2010.

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