Cita APA (7th ed.)

Quesada, F. B. (1976). The mechanics and economics of tourism. s.n.].

Cita Chicago (17th ed.)

Quesada, Francisco B. The Mechanics and Economics of Tourism. [S.l: s.n.], 1976.

Cita MLA (9th ed.)

Quesada, Francisco B. The Mechanics and Economics of Tourism. s.n.], 1976.