Karametsi, K. (13 August 2014). "Identification of bitter peptides in aged cheddar cheese". Journal of Agricultural and Food Chemistry. 62 (32): 8034–41. doi:10.1021/jf5020654. PMID25075877.
"Andrew Jackson". The Presidents of the United States of America. The White House. Archived from the original on 14 May 2011. Retrieved 24 October 2008.
Karametsi, K. (13 August 2014). "Identification of bitter peptides in aged cheddar cheese". Journal of Agricultural and Food Chemistry. 62 (32): 8034–41. doi:10.1021/jf5020654. PMID25075877.
"Andrew Jackson". The Presidents of the United States of America. The White House. Archived from the original on 14 May 2011. Retrieved 24 October 2008.