APA (7th ed.) Citation
(1981). Geo-marine letters. A.M. Dowden.
Chicago Style (17th ed.) Citation
Geo-marine Letters. Stroudsburg, Pa.: A.M. Dowden, 1981.
MLA (9th ed.) Citation
Geo-marine Letters. A.M. Dowden, 1981.
Warning: These citations may not always be 100% accurate.