Gaya APA

Widodo, M, P., Hardiyatmo, H, C. (1992). Mekanika tanah 1 / Hary Christady Hardiyatmo; editor, Mc. Prihminto Widodo . Jakarta: Gramedia Pustaka Utama.

Gaya MLA

Widodo, Mc., Prihminto., Hardiyatmo, Hary, Christady. "Mekanika tanah 1 / Hary Christady Hardiyatmo; editor, Mc. Prihminto Widodo". Jakarta: Gramedia Pustaka Utama, 1992. Textbook.