APA引文

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

芝加哥风格引文

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

MLA引文

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

警告:这些引文格式不一定是100%准确.