Gaya APA

Hinrichsen, G, A. (2019). Assessment and treatment of older adults: a guide for mental health professionals 1st edition (Edisi satu, Agustus 2019). Amerika: American Psychological Association.

Gaya MLA

Hinrichsen, Gregory, A.. "Assessment and treatment of older adults: a guide for mental health professionals 1st edition". Edisi satu, Agustus 2019 Amerika: American Psychological Association, 2019. Text.