Παραπομπή APA

Hubbard,L.Ron. (2007). Advanced procedure and axioms. New Era.

Παραπομπή Chicago Style

Hubbard,L.Ron. Advanced Procedure and Axioms. Denmark: New Era, 2007.

Παραπομπή MLA

Hubbard,L.Ron. Advanced Procedure and Axioms. New Era, 2007.