Gaya APA
R, C, S., editor, . (2021).
7 The Habits Of Highly Effective People (Cet 1).
Tangeran Selatan:
PT Karisma Inti Ilmu.
Gaya MLA
R, Covey, Stephen., editor, .
"7 The Habits Of Highly Effective People".
Cet 1
Tangeran Selatan:
PT Karisma Inti Ilmu,
2021.
Reference.