Cita APA (7a ed.)
Macurda, D. B. (1963). A new spiraculate Blastoid, Pyramiblastus, from the Mississippian Hampton Formation of Iowa.
Cita Chicago Style (17a ed.)
Macurda, Donald B. A New Spiraculate Blastoid, Pyramiblastus, from the Mississippian Hampton Formation of Iowa. Ann Arbor, 1963.
Cita MLA (9a ed.)
Macurda, Donald B. A New Spiraculate Blastoid, Pyramiblastus, from the Mississippian Hampton Formation of Iowa. 1963.
Precaución: Estas citas no son 100% exactas.