APA način citiranja

Hajek, A., Kretzler, B., & König, H. (2021). Informal caregiving for adults, loneliness and social isolation: A study protocol for a systematic review. BMJ Open.

Čikaški stil citiranja

Hajek, André, Benedikt Kretzler, i Hans-Helmut König. "Informal Caregiving for Adults, Loneliness and Social Isolation: A Study Protocol for a Systematic Review." BMJ Open 2021.

MLA način citiranja

Hajek, André, Benedikt Kretzler, i Hans-Helmut König. "Informal Caregiving for Adults, Loneliness and Social Isolation: A Study Protocol for a Systematic Review." BMJ Open 2021.