Gaya APA
Ph.D., F, A.
(1981).
Calculus 21 ed
(
1)
.
Singapore:
Schaum\'s Outline Series.
Gaya MLA
Ph.D., Frank, Ayres,JR.,.
"Calculus 21 ed".
1
Singapore:
Schaum\'s Outline Series,
1981.
Text.