APA (7th ed.) Citation

Kroon, D., Steens, T. N. F., & Troelstra, S. (1991). Planktonic foraminifera of ODP Site 117-722. PANGAEA.

Chicago Style (17th ed.) Citation

Kroon, Dick, Tineke N F. Steens, and Simon Troelstra. Planktonic Foraminifera of ODP Site 117-722. PANGAEA, 1991.

MLA (9th ed.) Citation

Kroon, Dick, et al. Planktonic Foraminifera of ODP Site 117-722. PANGAEA, 1991.