The UCF Libraries have quite a few books and guides regarding intercultural etiquette and business practices in other countries. Take a look at Books about Living & Working Abroad: Doing Business in Various Countries for links to online resources and identification of print books, including:
Culture Shock book series
The Global Etiquette Guide to...: Everything You Need to Know for Business & Travel Success
How to Be a Perfect Stranger: A Guide to Etiquette in Other People's Religious Ceremonies
Do's & Don'ts Around the World: A Country Guide to Cultural & Social Taboos & Etiquette
Kiss, Bow, or Shake Hands: How to Do Business in Sixty Countries
Craighead's International Business, Travel, & Relocation Guide to 90 Countries