Gaya APA

SUDJIANTO, . et al (2009). Behavior of Expansive Clay of Ngawi Region (East Java) Under Water Content Variation . Surabaya: Petra Christian University-Surabaya, Indonwsia.

Gaya MLA

SUDJIANTO, . et al. "Behavior of Expansive Clay of Ngawi Region (East Java) Under Water Content Variation". Surabaya: Petra Christian University-Surabaya, Indonwsia, 2009. Artikel.