APA

(1979). New Encyclopaedia Of Science Vol.15: Tertiary-Watch. : .

Chicago

1979. New Encyclopaedia Of Science Vol.15: Tertiary-Watch. : .

Harvard

(1979). New Encyclopaedia Of Science Vol.15: Tertiary-Watch. : .

MLA

New Encyclopaedia Of Science Vol.15: Tertiary-Watch. : . 1979.