Cita APA (7th ed.)

(2021). State of the Federal Depository Library Program [electronic resource].

Cita Chicago (17th ed.)

State of the Federal Depository Library Program [electronic Resource]. 2021.

Cita MLA (9th ed.)

State of the Federal Depository Library Program [electronic Resource]. 2021.

Atenció: Aquestes cites poden no estar 100% correctes.