Franklin

MLA

Blair, B. E., and B. E Blair. Time and Frequency : a Bibliography of Nbs Literature Published July 1955-december 1970. .

APA

Blair, B. E., & Blair, B. E. Time and frequency : a bibliography of NBS literature published July 1955-December 1970. .

Chicago

Blair, B. E., and B. E Blair. Time and Frequency: A Bibliography of NBS Literature Published July 1955-December 1970.