Cita APA (7a ed.)
Fortey, R. A., & Bruton, D. L. (2013). Lower Ordovician trilobites of the Kirtonryggen Formation, Spitsbergen. Wiley Blackwell.
Cita Chicago Style (17a ed.)
Fortey, Richard A., y David L. Bruton. Lower Ordovician Trilobites of the Kirtonryggen Formation, Spitsbergen. Hoboken, New Jersey: Wiley Blackwell, 2013.
Cita MLA (9a ed.)
Fortey, Richard A., y David L. Bruton. Lower Ordovician Trilobites of the Kirtonryggen Formation, Spitsbergen. Wiley Blackwell, 2013.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.