Gaya APA

Landry, D, J, M, V, L, B, P, H. (1987). Measurement of intergenerational Relation . California: SAGE.

Gaya MLA

Landry, David, J., Mangen,, Vern, L., Bengtson,, Pierre, H.. "Measurement of intergenerational Relation". California: SAGE, 1987. Text.