APA (7e ed.) Bronvermelding

Ong, E. G. (1991). Winning in real estate, Philippine style. Worldlink Realty & Management Corporation.

Chicago (17e ed.) Bronvermelding

Ong, Eduardo Gutierrez. Winning in Real Estate, Philippine Style. [S.l.]: Worldlink Realty & Management Corporation, 1991.

MLA (9e ed.) Bronvermelding

Ong, Eduardo Gutierrez. Winning in Real Estate, Philippine Style. Worldlink Realty & Management Corporation, 1991.