Smith, M. P. (1991). Early Ordovician conodonts of East and North Greenland. Geografforlaget.
Chicago Style (17th ed.) CitationSmith, M. P. Early Ordovician Conodonts of East and North Greenland. Brenderup: Geografforlaget, 1991.
MLA (9th ed.) CitationSmith, M. P. Early Ordovician Conodonts of East and North Greenland. Geografforlaget, 1991.
Warning: These citations may not always be 100% accurate.