Gaya APA
Harmer, B.
(1962).
Textbook of the principles and practice or nursing
(
ed. 5)
.
USA:
The Maxmillan company.
Gaya MLA
Harmer, Bertha.
"Textbook of the principles and practice or nursing".
ed. 5
USA:
The Maxmillan company,
1962.
Text.