Stuart Robson has many years' experience teaching languages in various universities. He has written several books, including Instant Indonesian.
Prateep Changchit is currently teaching Thai to the Australian Federal Police in Melbourne, and has produced teaching kits for English teachers in Bangkok.

It's amazing how 100 key words and phrases provide instant communication!
Do you want to speak simple Thai but are too busy to study it? Are you visiting Thailand for a short time and want a Thai phrase book to help you communicate? If so, this Thai phrasebook is for you—it's the easiest and quickest way to learn Thai. It's tiny 0.4 x 4.1 x 5.9 inches size makes it incredibly convenient to travel with but without losing the essential content for communication.
The idea of Instant Thai is simple—learn 100 words and phrases and say 1,000 things. The trick is knowing which 100 words to learn, but the authors Stuart Robson and Prateep Changchit have solved the problem, choosing only those words you'll hear again and again. Even with a vocabulary this small, you'll be surprised how quickly and fluently you too can communicate in the Thai language. It also has an English-Thai dictionary, arranged alphabetically. At the end of the book are useful appendices for telling the time, kinship terms, some Thai proverbs, and emergency expressions. Here's a sample of what you'll be able to do with this Thai phrasebook:

• Meet people.
• Go shopping.
• Ask directions.
• Ride the subway.
• Order food and drinks.
• And much more.