Citazione Stile APA (7a Edizione)
Cross, D. R. (2000). The wonder of the universe: A special collection of quotations from Great Minds Throughout History. Multnomah.
Citazione stile Chigago Style (17a edizione)
Cross, Del Ray. The Wonder of the Universe: A Special Collection of Quotations from Great Minds Throughout History. Oregon: Multnomah, 2000.
Citatione MLA (9a ed.)
Cross, Del Ray. The Wonder of the Universe: A Special Collection of Quotations from Great Minds Throughout History. Multnomah, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.