APA (7th ed.) Citation

Freitag, H. C. (1987). Gravity fields of eight north Pacific seamounts: Implications for density. [publisher not identified].

Chicago Style (17th ed.) Citation

Freitag, Helen Clare. Gravity Fields of Eight North Pacific Seamounts: Implications for Density. [Place of publication not identified]: [publisher not identified], 1987.

MLA (9th ed.) Citation

Freitag, Helen Clare. Gravity Fields of Eight North Pacific Seamounts: Implications for Density. [publisher not identified], 1987.