Gaya APA

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

Gaya MLA

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