APA (7th ed.) Citation

Udden, J. A. (2010). Fossil Ice Crystals An Instance of the Practical Value of "Pure Science". Project Gutenberg.

Chicago Style (17th ed.) Citation

Udden, Johan August. Fossil Ice Crystals An Instance of the Practical Value of "Pure Science". Project Gutenberg, 2010.

MLA (9th ed.) Citation

Udden, Johan August. Fossil Ice Crystals An Instance of the Practical Value of "Pure Science". Project Gutenberg, 2010.

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