Gaya APA
HOFFMANN, L, D., Bradley, G, L. (1940).
CALCULUS : For Business, Economics, and the Social and Lifr Sciences (Edisi 8).
Amerika:
Mc Graw Hill.
Gaya MLA
HOFFMANN, Laurence, D.., Bradley, Gerald, L..
"CALCULUS : For Business, Economics, and the Social and Lifr Sciences".
Edisi 8
Amerika:
Mc Graw Hill,
1940.
Text.