Παραπομπή APA

Rao, V. L. (1967). International system of units. Institute of Mathematical Sciences.

Παραπομπή Chicago Style

Rao, V.V. Lakshmana. International System of Units. Madras: Institute of Mathematical Sciences, 1967.

Παραπομπή MLA

Rao, V.V. Lakshmana. International System of Units. Institute of Mathematical Sciences, 1967.