APA (7th ed.) Citation

Phindā Sitthisunthǭn, Gardner, S., & Smart, D. Caves in northern Thailand.

Chicago Style (17th ed.) Citation

Phindā Sitthisunthǭn, Simon Gardner, and Dean Smart. Caves in Northern Thailand.

MLA (9th ed.) Citation

Phindā Sitthisunthǭn, et al. Caves in Northern Thailand.