Gaya APA
Gallup, George, Gallup, Alec M., Proctor, William.. (1986).
the Great American success story : factors that affect achievment / George Gallup, Alec M. Gallup, with William Proctor .
Homewood, Ill.:
Dow Jones-Irwin.
Gaya Chicago
Gallup, George, Gallup, Alec M., Proctor, William..
the Great American success story : factors that affect achievment / George Gallup, Alec M. Gallup, with William Proctor.
Homewood, Ill.:
Dow Jones-Irwin,
1986.
Buku.
Gaya MLA
Gallup, George, Gallup, Alec M., Proctor, William..
the Great American success story : factors that affect achievment / George Gallup, Alec M. Gallup, with William Proctor.
Homewood, Ill.:
Dow Jones-Irwin,
1986.
Buku.
Gaya Turabian
Gallup, George, Gallup, Alec M., Proctor, William..
the Great American success story : factors that affect achievment / George Gallup, Alec M. Gallup, with William Proctor.
Homewood, Ill.:
Dow Jones-Irwin,
1986.
Buku.