Cita APA (7a ed.)

Lang, T. H., & Watkins, D. K. (1984). (Figure 7) Ranges of Cenozoic calcareous nannofossil species observed at DSDP Hole 77-540. PANGAEA.

Cita Chicago Style (17a ed.)

Lang, Thomas H., y David K. Watkins. (Figure 7) Ranges of Cenozoic Calcareous Nannofossil Species Observed at DSDP Hole 77-540. PANGAEA, 1984.

Cita MLA (9a ed.)

Lang, Thomas H., y David K. Watkins. (Figure 7) Ranges of Cenozoic Calcareous Nannofossil Species Observed at DSDP Hole 77-540. PANGAEA, 1984.