1. PostgreSQL 16 Documentation, psql, Informational Commands: The official documentation provides a table of psql meta-commands. It explicitly lists \dn[S+] [pattern] with the description "list schemas (namespaces)".
Source: PostgreSQL Documentation, Chapter: psql, Section: Meta-Commands. Available at: https://www.postgresql.org/docs/current/app-psql.html (Refer to the table under the "Informational Commands" heading).
2. University of California, Berkeley, EECS Department Courseware: Materials for database courses like CS 186 often include tutorials on using psql. These materials confirm that \dn is the standard command for listing schemas.
Source: UC Berkeley, CS 186: Introduction to Database Systems, Lab 0 - Getting Started with PostgreSQL. The guide lists common psql commands, including \dn for listing schemas.
3. PostgreSQL Tutorial from The PostgreSQL Global Development Group: This official tutorial site, maintained by the core development group, provides practical examples. The section on managing databases demonstrates the use of psql commands.
Source: PostgreSQL Tutorial, "PostgreSQL List Schemas". This resource explains how to use both the \dn meta-command and the informationschema.schemata view to list schemas. Available at: https://www.postgresqltutorial.com/postgresql-administration/postgresql-list-schemas/
