APA Format
Gerstman, B. Burt . (). Epidemiology... : Observational study designs, ( Ket. lihat bab. 11 ) ( halaman 191-221 ). : Canada : Willey-liss, 2003
MLA Format
Gerstman, B. Burt . Epidemiology... : Observational study designs, ( Ket. lihat bab. 11 ) ( halaman 191-221 ). : Canada : Willey-liss, 2003,
Australian/Harvard Format
Gerstman, B. Burt . . Epidemiology... : Observational study designs, ( Ket. lihat bab. 11 ) ( halaman 191-221 ). Canada : Willey-liss, 2003, 
Warning: These citations may not always be 100% accurate.