Cita APA (7a ed.)

Lüthi, C., Hoffmann, S., & Willetts, J. (2020). City-Wide Sanitation: The Urban Sustainability Challenge. Frontiers Media SA.

Cita Chicago Style (17a ed.)

Lüthi, Christoph, Sabine Hoffmann, y Juliet Willetts. City-Wide Sanitation: The Urban Sustainability Challenge. Frontiers Media SA, 2020.

Cita MLA (9a ed.)

Lüthi, Christoph, et al. City-Wide Sanitation: The Urban Sustainability Challenge. Frontiers Media SA, 2020.