APA Format
Gravetter, Frederick J; Forzano, Lori-Ann B.
. (). Research... : Approaches to research : internal and external validity, ( ket. lihat bab. 6 ) ( halaman 157-194 ). : Australia : Wadsworth, 2012
MLA Format
Gravetter, Frederick J; Forzano, Lori-Ann B.
. Research... : Approaches to research : internal and external validity, ( ket. lihat bab. 6 ) ( halaman 157-194 ). : Australia : Wadsworth, 2012,
Australian/Harvard Format
Gravetter, Frederick J; Forzano, Lori-Ann B.
. . Research... : Approaches to research : internal and external validity, ( ket. lihat bab. 6 ) ( halaman 157-194 ). Australia : Wadsworth, 2012,
Warning: These citations may not always be 100% accurate.