Spiller, Gene A.: Caffeine – Methylxanthine composition and consumption patterns of cocoa and chocolate products. CRC Press, 23.4.2019. ISBN 978-1-4200-5013-4. Teoksen verkkoversio.
Lee Hooper, Colin Kay, Asmaa Abdelhamid, Paul A. Kroon, Jeffrey S. Cohn, Eric B. Rimm: Effects of chocolate, cocoa, and flavan-3-ols on cardiovascular health: a systematic review and meta-analysis of randomized trials. The American Journal of Clinical Nutrition, 1.3.2012, nro 3, s. 740–751. doi:10.3945/ajcn.111.023457. ISSN 0002-9165. Artikkelin verkkoversio. en
Lee Hooper, Colin Kay, Asmaa Abdelhamid, Paul A. Kroon, Jeffrey S. Cohn, Eric B. Rimm: Effects of chocolate, cocoa, and flavan-3-ols on cardiovascular health: a systematic review and meta-analysis of randomized trials. The American Journal of Clinical Nutrition, 1.3.2012, nro 3, s. 740–751. doi:10.3945/ajcn.111.023457. ISSN 0002-9165. Artikkelin verkkoversio. en
Mitä on raakasuklaa? xoco.fi. Arkistoitu 9.10.2010. Viitattu 1.1.2021.
worldcat.org
Lee Hooper, Colin Kay, Asmaa Abdelhamid, Paul A. Kroon, Jeffrey S. Cohn, Eric B. Rimm: Effects of chocolate, cocoa, and flavan-3-ols on cardiovascular health: a systematic review and meta-analysis of randomized trials. The American Journal of Clinical Nutrition, 1.3.2012, nro 3, s. 740–751. doi:10.3945/ajcn.111.023457. ISSN 0002-9165. Artikkelin verkkoversio. en