APA (7th ed.) Citation

Negri, A., Capotondi, L., & Keller, J. (1999). Calcareous nannofossils, planktonic foraminifera and oxygen isotopes in the late Quaternary sapropels of the Ionian Sea. Marine Geology, 157(1-2), 89.

Chicago Style (17th ed.) Citation

Negri, Alessandra, L. Capotondi, and Jörg Keller. "Calcareous Nannofossils, Planktonic Foraminifera and Oxygen Isotopes in the Late Quaternary Sapropels of the Ionian Sea." Marine Geology 157, no. 1-2 (1999): 89.

MLA (8th ed.) Citation

Negri, Alessandra, et al. "Calcareous Nannofossils, Planktonic Foraminifera and Oxygen Isotopes in the Late Quaternary Sapropels of the Ionian Sea." Marine Geology, vol. 157, no. 1-2, 1999, p. 89.