MLA

Buehn,Andreas, and Schneider,Friedrich Schneider,Friedrich. Estimating the Size of the Shadow Economy : Methods, Problems and Open Questions. München: CESifo, 2013.

APA

Buehn,Andreas, B., & Schneider,Friedrich, S. (2013). Estimating the size of the shadow economy : methods, problems and open questions. München: CESifo.

Chicago

Buehn,Andreas, and Schneider,Friedrich Schneider,Friedrich. Estimating the Size of the Shadow Economy : Methods, Problems and Open Questions. München: CESifo, 2013.