APA (7th ed.) Citation

Dickenberger, B., Schmitz, M., & Dickmann, H. (1990). Ecuador.

Chicago Style (17th ed.) Citation

Dickenberger, Barbara, Meinolf Schmitz, and Hansgeorg Dickmann. Ecuador. [Frankfurt/M.], 1990.

MLA (9th ed.) Citation

Dickenberger, Barbara, et al. Ecuador. 1990.