Teaching Company & Filippenko, A. V. (2003). Understanding the universe: What's new in asronomy, 2003. Teaching Company.
Citazione stile Chigago Style (17a edizione)Teaching Company e Alexei V. Filippenko. Understanding the Universe: What's New in Asronomy, 2003. Chantilly, VA: Teaching Company, 2003.
Citatione MLA (9a ed.)Teaching Company e Alexei V. Filippenko. Understanding the Universe: What's New in Asronomy, 2003. Teaching Company, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.