Gaya APA
Kettering, J, D., A, I, F, H, M, I, S, C.
(2007).
Microbiology
.
Boston:
.
Gaya MLA
Kettering, James, D., A, I., Fletcher,, Hansel, M, II., Seheult,, Craig.
"Microbiology".
Boston:
,
2007.
Text.