Gaya APA
Tambunan, Rietz R.. (2002).
Methodolical research and introduction to logic .
Medan:
Catholic University of St.Thomas.
Gaya Chicago
Tambunan, Rietz R..
Methodolical research and introduction to logic.
Medan:
Catholic University of St.Thomas,
2002.
Text.
Gaya MLA
Tambunan, Rietz R..
Methodolical research and introduction to logic.
Medan:
Catholic University of St.Thomas,
2002.
Text.
Gaya Turabian
Tambunan, Rietz R..
Methodolical research and introduction to logic.
Medan:
Catholic University of St.Thomas,
2002.
Print.