APA (7th ed.) Citation

Vongvichien, S. (1965). Legibility of Thai character highway signs under a simulated driving condition. [publisher not identified].

Chicago Style (17th ed.) Citation

Vongvichien, Sathien. Legibility of Thai Character Highway Signs Under a Simulated Driving Condition. Bangkok: [publisher not identified], 1965.

MLA (9th ed.) Citation

Vongvichien, Sathien. Legibility of Thai Character Highway Signs Under a Simulated Driving Condition. [publisher not identified], 1965.

Warning: These citations may not always be 100% accurate.