Nilsson, M. P. Primitive Time-reckoning A study in the origins and first development of the art of counting time among the primitive and early culture peoples.
Chicago Style (17th ed.) CitationNilsson, Martin P. Primitive Time-reckoning A Study in the Origins and First Development of the Art of Counting Time Among the Primitive and Early Culture Peoples.
MLA (9th ed.) CitationNilsson, Martin P. Primitive Time-reckoning A Study in the Origins and First Development of the Art of Counting Time Among the Primitive and Early Culture Peoples.
Warning: These citations may not always be 100% accurate.