Protein-digesting enzymes of papaya and pineapple /

Chicago citation style
Balls, A. K. (Arnold Kent), 1891-. Protein-digesting enzymes of papaya and pineapple /. 1941. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394444. (Accessed December 17, 2018.)
APA citation style
Balls, A. K. (Arnold Kent), 1891-, (1941) Protein-digesting enzymes of papaya and pineapple /. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011394444
MLA citation style
Balls, A. K. (Arnold Kent), 1891-. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/011394444>.
Note: These citations are programmatically generated and may be incomplete.