Cita APA (7th ed.)

Frogosa, D., & Rivera, V. C. (1968). Municipality of San Juan. s.n.].

Cita Chicago (17th ed.)

Frogosa, D.M, i Vic C. Rivera. Municipality of San Juan. [S.l: s.n.], 1968.

Cita MLA (9th ed.)

Frogosa, D.M, i Vic C. Rivera. Municipality of San Juan. s.n.], 1968.