APA (7th ed.) Citation

Yeoh, T. G., Wong, J., & Yeo, M. (1971). Jurong Bird Park. Graphic Publications.

Chicago Style (17th ed.) Citation

Yeoh, T. G., J. Wong, and M. Yeo. Jurong Bird Park. Singapore: Graphic Publications, 1971.

MLA (8th ed.) Citation

Yeoh, T. G., et al. Jurong Bird Park. Graphic Publications, 1971.