Gaya APA
Douglass, M, E., Douglass, D, N. (1985).
Manage your Time, Manage your Work, Manage Yourself (pertama).
USA:
Amacom.
Gaya MLA
Douglass, Merril, E.., Douglass, Donna, N..
"Manage your Time, Manage your Work, Manage Yourself".
pertama
USA:
Amacom,
1985.
Teksbook.