Cita APA (7th ed.)

Guevara, G. B. (1973). Across four generations. United Pub.

Cita Chicago (17th ed.)

Guevara, Guillermo B. Across Four Generations. [Manila: United Pub, 1973.

Cita MLA (9th ed.)

Guevara, Guillermo B. Across Four Generations. United Pub, 1973.