Gaya APA
JOHNSON, L, R, [.
(2007).
GASTROINTESTINAL physiology
(
7th ed.)
.
Philadelphia:
Mosby Elsevier.
Gaya MLA
JOHNSON, Leonard, R., [ed.].
"GASTROINTESTINAL physiology".
7th ed.
Philadelphia:
Mosby Elsevier,
2007.
Buku.