@inbook {Ballard1978,
	title = {{The ocean depths}},
	booktitle = {Ocean Realm},
	year = {1978},
	pages = {148{\textendash}167},
	publisher = {National Geographic Society},
	organization = {National Geographic Society},
	address = {Washington, D.C.},
	isbn = {0870442511},
	author = {Ballard, R D}
}
