Sources
I register each reference used for a preset or article: title, publisher, type, access date, and applicable scope. Key references include published brewing best-practice guidance, manufacturer dose/yield guidance for espresso, and general extraction references. Where a source applies only to a specific method or condition, I note that scope rather than presenting it as universal.
Specific citations are attached on the relevant method and guide pages. Corrections and additions are tracked on my Methodology page.