APA (7th ed.) Citation

Ecke, W., & Rettich, R. (1983). The castle of the red gorillas (1st American ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Ecke, Wolfgang, and Rolf Rettich. The Castle of the Red Gorillas. 1st American ed. Englewood Cliffs, N.J.: Prentice-Hall, 1983.

MLA (9th ed.) Citation

Ecke, Wolfgang, and Rolf Rettich. The Castle of the Red Gorillas. 1st American ed. Prentice-Hall, 1983.