Παραπομπή σε μορφή APA (7η εκδ.)

Lammersen, L., & Schwager, R. (2005). The Effective Tax Burden of Companies in European Regions: An International Comparison. Physica-Verlag Heidelberg.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lammersen, Lothar, και Robert Schwager. The Effective Tax Burden of Companies in European Regions: An International Comparison. Heidelberg: Physica-Verlag Heidelberg, 2005.

Παραπομπή σε μορφή MLA (8th εκδ.)

Lammersen, Lothar, και Robert Schwager. The Effective Tax Burden of Companies in European Regions: An International Comparison. Physica-Verlag Heidelberg, 2005.