Παραπομπή σε μορφή APA (7η εκδ.)

Caballero, R. J., & Engel, E. M. (1998). Nonlinear aggregate investment dynamics: Theory and evidence. National Bureau of Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Caballero, Ricardo J., και Eduardo M.R.A Engel. Nonlinear Aggregate Investment Dynamics: Theory and Evidence. Cambride: National Bureau of Economic Research, 1998.

Παραπομπή σε μορφή MLA (9th εκδ.)

Caballero, Ricardo J., και Eduardo M.R.A Engel. Nonlinear Aggregate Investment Dynamics: Theory and Evidence. National Bureau of Economic Research, 1998.