APA ציטוט
Yochelson, E. L. (1964). The Early Ordovician gastropod Ceratopea from East Greenland. Reitzel.
Chicago Style (17th ed.) Citation
Yochelson, Ellis L. The Early Ordovician Gastropod Ceratopea from East Greenland. København: Reitzel, 1964.
ציטוט MLA
Yochelson, Ellis L. The Early Ordovician Gastropod Ceratopea from East Greenland. Reitzel, 1964.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.