@inbook {310706,
	title = {Mother-offspring relationships in free-ranging chimpanzees},
	booktitle = {Primate Ethology},
	year = {1969},
	pages = {365-436},
	publisher = {Doubleday},
	organization = {Doubleday},
	address = {New York },
	author = {Goodall, J.}
}
