Gaya APA
Francis, M, M.
(1978).
A Sign And Symptomps Approach
(
Edisi 4th.ed.)
.
louis:
Mosby Company.
Gaya MLA
Francis, Moster, M..
"A Sign And Symptomps Approach".
Edisi 4th.ed.
louis:
Mosby Company,
1978.
Text.