Cita APA (7th ed.)

Carballo, L. R. (2000). Keeping in touch: A workbook in human relations development. s.n.

Cita Chicago (17th ed.)

Carballo, Leni Ramos. Keeping in Touch: A Workbook in Human Relations Development. [S.l: s.n, 2000.

Cita MLA (9th ed.)

Carballo, Leni Ramos. Keeping in Touch: A Workbook in Human Relations Development. s.n, 2000.