Author AA, Author BB, Author CC. Title of article: Capital letter also for subtitle. Abbreviated Title of Journal. Year; Volume number(Issue number): page numbers.
Use the PubMed NLM Catalog Journal Search to find out the abbreviation for your journal title.
Sheng A, Dalziel P, Liteplo A, Fagenholz P, Noble V. Focused assessment with sonography in trauma and abdominal computed tomography utilization in adult trauma patients: Trends over the last decade. Emerg Med Int. 2013;2013:678380.