APA (7th ed.) Citation

Sugiharto. (1983). Keselamatan kerja. LPPI.

Chicago Style (17th ed.) Citation

Sugiharto. Keselamatan Kerja. LPPI, 1983.

MLA (8th ed.) Citation

Sugiharto. Keselamatan Kerja. LPPI, 1983.

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