Xiaobing Li; Michael Molina: Oil : a cultural and geographic encyclopedia of black gold. ABC-CLIO, Santa Barbara, CA 2014, ISBN 978-1-61069-271-7, S.37 (Text in der Google-Buchsuche).
Mexican Company Predicts End of Oil. In: Prensa Latina. 27. Juli 2007, abgerufen am 5. Juli 2017 (englisch): „Until December 31, 2005 the report says proven reserves were about 8.978 billion barrels, while yearly production was 1.322 billion tons.“
pemex.com
PEMEX: Annual Report for the fiscal year ended December 31, 2022. (SEC Form 20-F). United States Securities and Exchange Commission, 28. April 2023, S. 43, abgerufen am 24. Oktober 2023: „As of December 31, 2022, the cumulative production of Cantarell amounted to 14.4 billion barrels of crude oil and 11.7 trillion cubic feet of natural gas. As of December 31, 2022, Cantarell's proved oil and gas reserves amounted to 403.3 million barrels of crude oil and 477.1 billion cubic feet of natural gas.“