Наблюдатели

• 

  Saundra Cave

  https://gitea.cisetech.com/augustus14b904/1278cbd-olje/wiki/An-Introduction-To-Viral-Marketing
• 

  Mammie Lundy

  http://Devhub.dost.gov.ph/heikealfonso89/5238233/wiki/Top-5-Credit-Misconceptions