Gaya APA
Tuma, J, J. (1971).
(PASCA TEKNIK SIPIL) Theory and Problems of Space Structural Analysis (Edisi 1).
New York:
Mc Graw Hiil.
Gaya MLA
Tuma, Jan, J..
"(PASCA TEKNIK SIPIL) Theory and Problems of Space Structural Analysis".
Edisi 1
New York:
Mc Graw Hiil,
1971.
.