Cita APA (7a ed.)

(1999). One step to Spanish: For, work, business, travel, school, fun. Visual Teaching Systems.

Cita Chicago Style (17a ed.)

One Step to Spanish: For, Work, Business, Travel, School, Fun. Chicago: Visual Teaching Systems, 1999.

Cita MLA (9a ed.)

One Step to Spanish: For, Work, Business, Travel, School, Fun. Visual Teaching Systems, 1999.