APA (7th ed.) Citation

Ballard, R. D. (1974). The nature of Triassic continental rift structures in the Gulf of Maine. [publisher not identified].

Chicago Style (17th ed.) Citation

Ballard, Robert D. The Nature of Triassic Continental Rift Structures in the Gulf of Maine. [Place of publication not identified]: [publisher not identified], 1974.

MLA (9th ed.) Citation

Ballard, Robert D. The Nature of Triassic Continental Rift Structures in the Gulf of Maine. [publisher not identified], 1974.