MLA

Kotler, Waldemar Pfoertsch, and Uwe Sponholz. H2h Marketing. Springer International Publishing, 2021.

APA

Kotler, K., Pfoertsch, W., & Sponholz, U. (2021). H2H Marketing. Springer International Publishing.

Chicago

Kotler, Waldemar Pfoertsch, and Uwe Sponholz. H2H Marketing. : Springer International Publishing, 2021.