1. Article Marketing
2. Website Content Creating (creating pages and posts targeting search terms)
3. Videos
4. Google AdWords
5. Through Facebook Ads

Utilize social hangouts relevant to the target audience

• Through relevant forums
• Share the pages, psots, and articles you create within your social network (like Twitter, Google plus, +1, and pinterst, etc.).

The key is to be creative and take consistent action with your promotions. If you are on a limited budget most of these techniques are free outside the ones that are marked paid, beside them. Spend consistent time and energy everyday breaking down an audience, finding keywords, and building your campaigns, it won't be long before you are making consistent WA referrals.