APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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