Cita APA

Gannon, M. G. (1990). The Philippines tourism manpower survey, 1990: Appendix 1. s.n.].

Citación estilo Chicago

Gannon, Mary G. The Philippines Tourism Manpower Survey, 1990: Appendix 1. [S.l: s.n.], 1990.

Cita MLA

Gannon, Mary G. The Philippines Tourism Manpower Survey, 1990: Appendix 1. s.n.], 1990.