@article {665,
	title = {Priapulidae and Sipunculidae},
	journal = {The Danish "Ingolf" Expedition},
	volume = {4},
	number = {7},
	year = {1930},
	pages = {1-44},
	author = {Wesenberg-Lund, E.}
}
@article {562,
	title = {Report on the biological survey of Mutsu Bay. 15. Sipunculoidea},
	journal = {Science Reports. Series 4 Biology},
	volume = {5},
	year = {1930},
	pages = {1-40},
	author = {Sato, H.}
}
