APA (7th ed.) Citation

Nasution, S. Dinding Penahan Tanah.

Chicago Style (17th ed.) Citation

Nasution, Syarifudin. Dinding Penahan Tanah.

MLA (8th ed.) Citation

Nasution, Syarifudin. Dinding Penahan Tanah.

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