SIHOMBING, Salem p. Pengaruh tanah ekspansi pada pondasi tiang. Jurnal Jalan Jembatan, [S. l.], n. 1, p. 9–16, 2019. Disponível em: https://binamarga.pu.go.id/jurnal/index.php/jurnaljalanjembatan/article/view/513. Acesso em: 12 oct. 2025.