APA Style

WIRTZ, BERND W.. (2019). DIGITAL BUSINESS MODELS - CONCEPT, MODELS, AND THE ALPHABET CASE STUDY . Germany: Springer.

Chicago Style

WIRTZ, BERND W.. DIGITAL BUSINESS MODELS - CONCEPT, MODELS, AND THE ALPHABET CASE STUDY. Germany: Springer, 2019. Text.

MLA Style

WIRTZ, BERND W.. DIGITAL BUSINESS MODELS - CONCEPT, MODELS, AND THE ALPHABET CASE STUDY. Germany: Springer, 2019. Text.

Turabian Style

WIRTZ, BERND W.. DIGITAL BUSINESS MODELS - CONCEPT, MODELS, AND THE ALPHABET CASE STUDY. Germany: Springer, 2019. Print.