APA (7th ed.) Citation
Marshall, S. M., & Orr, A. P. (1955). The Biology of a marine copepod: Calanus finmarchicus <Gunnerus>: By S.M. Marshall and A[ndrew] P[icken] Orr. Oliver and Boyd.
Chicago Style (17th ed.) Citation
Marshall, Sheina Macalister, and Andrew Picken Orr. The Biology of a Marine Copepod: Calanus Finmarchicus <Gunnerus>: By S.M. Marshall and A[ndrew] P[icken] Orr. Edinbourgh: Oliver and Boyd, 1955.
MLA (9th ed.) Citation
Marshall, Sheina Macalister, and Andrew Picken Orr. The Biology of a Marine Copepod: Calanus Finmarchicus <Gunnerus>: By S.M. Marshall and A[ndrew] P[icken] Orr. Oliver and Boyd, 1955.
Warning: These citations may not always be 100% accurate.