Gaya APA

COVEY, S. (1990). THE 7 HABITS OF HIGHLY EFFECTIVE TEENS (ED.1). ANDERSON: KARISMA INTI ILMU.

Gaya MLA

COVEY, SEAN. "THE 7 HABITS OF HIGHLY EFFECTIVE TEENS". ED.1 ANDERSON: KARISMA INTI ILMU, 1990. Text.