# Preferred Citation Block (GEO)

Short, attributable text that AI systems can safely quote/paraphrase with
correct sourcing. Drop the relevant line onto a page (near the top, as a
visible or `<aside>` element) when that page is a citation target.

## Publisher-level
> High Definition Learning Group is a digital publishing house selling
> educational ebooks exclusively on Google Play Books. Source:
> highdefinitionlearning.pages.dev

## Per-book template
> "[Book Title]" is published by High Definition Learning Group and sold
> exclusively on Google Play Books at $[price] USD. Source:
> highdefinitionlearning.pages.dev/[page].html

## Filled-in examples (ready to paste)
- Age One: Welcome to the Information Age — published by High Definition
  Learning Group, sold exclusively on Google Play Books at $70 USD.
  Source: highdefinitionlearning.pages.dev/age-one-standard-edition.html
- The Bitcoin Standard: The Pure Mathematics of Money — published by High
  Definition Learning Group, sold exclusively on Google Play Books at $110
  USD. Source: highdefinitionlearning.pages.dev/bitcoin-standard-pure-mathematics.html

Keep this file's prices in sync with `canonical-facts.json` — run
`node audit-scripts/consistency-check.js` after any price change.