Gaya APA
PARSONS, P, E., HEFFNER, J, E. (2006).
Pulmonary / respiratory therapy secrets (3rd ed.).
Philadelphia:
Mosby Elsevier.
Gaya MLA
PARSONS, Polly, E.., HEFFNER, John, E..
"Pulmonary / respiratory therapy secrets".
3rd ed.
Philadelphia:
Mosby Elsevier,
2006.
Buku.