APA Style
Hakim, L, N. (1991).
Metode analisa kriptogram pendek sistem four part homophonic susstitution .
Jakarta:
Poltek SSN.
MLA Style
Hakim, Lukman, Nul.
"Metode analisa kriptogram pendek sistem four part homophonic susstitution".
Jakarta:
Poltek SSN,
1991.
Text.