APA-referens (7:e uppl.)

Som, R. K. (1973). Recall lapse in demographic enquiries. Asia Pub. House.

Chicago-referens (17:e uppl.)

Som, Ranjan Kumar. Recall Lapse in Demographic Enquiries. Bombay: Asia Pub. House, 1973.

MLA-referens (9:e uppl.)

Som, Ranjan Kumar. Recall Lapse in Demographic Enquiries. Asia Pub. House, 1973.