SOGE, P. (1991). A Reading Programme Civil Engineering Student Book I Paulinus Soge. UAJY.
Chicago Style aipamenaSOGE, Paulinus. A Reading Programme Civil Engineering Student Book I Paulinus Soge. UAJY, 1991.
MLA aipamenaSOGE, Paulinus. A Reading Programme Civil Engineering Student Book I Paulinus Soge. UAJY, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.