Gaya APA
Burdnak, M, A. (2003).
The Probiotic Solution: Nature's Best-Kept Secret for Radiant Health .
United States:
Dragon DoorPublication.
Gaya MLA
Burdnak, Mark, A..
"The Probiotic Solution: Nature's Best-Kept Secret for Radiant Health".
United States:
Dragon DoorPublication,
2003.
Buku Text.