Cita APA (7th ed.)

Holländer, R., & Verhoog, M. (2019). Energize the Base of the Pyramid! Logos Verlag Berlin.

Cita Chicago (17th ed.)

Holländer, Robert, i Mart Verhoog. Energize the Base of the Pyramid! Logos Verlag Berlin, 2019.

Cita MLA (9th ed.)

Holländer, Robert, i Mart Verhoog. Energize the Base of the Pyramid! Logos Verlag Berlin, 2019.