APA

Zúñiga F., Hay-Roe H., BPZ and Associates, INGEPET '99 I. S. (. . 1. O. 2. . L. P., Hay-Roe H. & BPZ and Associates.Talara. : .

Chicago

Zúñiga Fernando, Hay-Roe Hugh, BPZ and Associates, INGEPET '99 International Seminar (3° 1999 Oct 26-29 Lima Perú), Hay-Roe Hugh and BPZ and Associates.Talara. : .

Harvard

Zúñiga F., Hay-Roe H., BPZ and Associates, INGEPET '99 I. S. (. . 1. O. 2. . L. P., Hay-Roe H. and BPZ and Associates.Talara. : .

MLA

Zúñiga Fernando, Hay-Roe Hugh, BPZ and Associates, INGEPET '99 International Seminar (3° 1999 Oct 26-29 Lima Perú), Hay-Roe Hugh and BPZ and Associates.: . .