Gaya APA
SOTIRION, P, E. (1984).
Integrating College Study Skills: reasoning in reading, listening and writing .
Belmont:
wadsworth publishing company.
Gaya MLA
SOTIRION, Peter, Elias.
"Integrating College Study Skills: reasoning in reading, listening and writing".
Belmont:
wadsworth publishing company,
1984.
UMUM.