Cita APA (7th ed.)

Clarkson, E. N. K. (1986). Invertebrate palaeontology and evolution (2nd ed.). Allen & Unwin.

Cita Chicago (17th ed.)

Clarkson, E. N. K. Invertebrate Palaeontology and Evolution. 2nd ed. London, Boston: Allen & Unwin, 1986.

Cita MLA (9th ed.)

Clarkson, E. N. K. Invertebrate Palaeontology and Evolution. 2nd ed. Allen & Unwin, 1986.