Gaya APA
JEFFERY, . et al
(1939).
VOGEL'S TETBOOK OF QUANTITATIVE
.
amerika serikat:
Joha wiley and son inc.
Gaya MLA
JEFFERY, . et al.
"VOGEL'S TETBOOK OF QUANTITATIVE".
amerika serikat:
Joha wiley and son inc,
1939.
Text.