APA (7th ed.) Citation

Nippon Kokan. (1977). N.K.K. oil country tubular goods. NKK.

Chicago Style (17th ed.) Citation

Nippon Kokan. N.K.K. Oil Country Tubular Goods. Tokyo: NKK, 1977.

MLA (8th ed.) Citation

Nippon Kokan. N.K.K. Oil Country Tubular Goods. NKK, 1977.

Warning: These citations may not always be 100% accurate.