Enkeboll, Robert H. (1982): Petrology and provenance of sands and gravels from the Middle America Trench and trench slope, southwestern Mexico and Guatemala. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Lee, Mariana (editor), Watkins, Joel S., Moore, Casey J., Bachman, Steven B., Beghtel, Floyd, Butt, Arif, Didyk, Borys M., Dmitriev, Yuri I., Leggett, Jeremy K., Lundberg, Neil F., McMillen, Kenneth J., Niitsuma, Nobuaki, Rodriguez-Torres, Rafael, Shephard, Les E., Shipley, Thomas H., Stephan, Jean-Francois, Stradner, Herbert, Leg 66 of the cruises of the drilling vessel Glomar Challenger; Mazatlan, Mexico to Manzanillo, Mexico; March-May, 1979, 66, 521-530, georefid:1982-039605