APA Format
Machin, David; ( et al ) . (). Sample... : Cluster designs, repeated measures data and more than two groups, ( Ket. lihat bab. 6 ) ( halaman 58-66 ). : London : Blackwell Science, 2009/ 1997
MLA Format
Machin, David; ( et al ) . Sample... : Cluster designs, repeated measures data and more than two groups, ( Ket. lihat bab. 6 ) ( halaman 58-66 ). : London : Blackwell Science, 2009/ 1997,
Australian/Harvard Format
Machin, David; ( et al ) . . Sample... : Cluster designs, repeated measures data and more than two groups, ( Ket. lihat bab. 6 ) ( halaman 58-66 ). London : Blackwell Science, 2009/ 1997, 
Warning: These citations may not always be 100% accurate.