Hesselbo, S. (1988). TRACE FOSSILS OF CAMBRIAN AGLASPIDID ARTHROPODS.
Cita Chicago Style (17a ed.)Hesselbo, S. TRACE FOSSILS OF CAMBRIAN AGLASPIDID ARTHROPODS. 1988.
Cita MLA (9a ed.)Hesselbo, S. TRACE FOSSILS OF CAMBRIAN AGLASPIDID ARTHROPODS. 1988.
Precaución: Estas citas no son 100% exactas.