MLA

Elschner, Christina, and Robert Schwager. The Effective Tax Burden On Highly Qualified Employers. Physica-Verlag HD, 2005.

APA

Elschner, C., & Schwager, R. (2005). The Effective Tax Burden on Highly Qualified Employers. Physica-Verlag HD.

Chicago

Elschner, Christina, and Robert Schwager. The Effective Tax Burden On Highly Qualified Employers. : Physica-Verlag HD, 2005.