Cita APA (7th ed.)

Heinrichs, D., Krellenberg, K., Hansjürgens, B., & Martínez Concha, F. (2012). Risk habitat megacity. Springer.

Cita Chicago (17th ed.)

Heinrichs, Dirk, Kerstin Krellenberg, Bernd Hansjürgens, i Francisco Martínez Concha. Risk Habitat Megacity. Heidelberg: Springer, 2012.

Cita MLA (9th ed.)

Heinrichs, Dirk, et al. Risk Habitat Megacity. Springer, 2012.