Cita APA (7th ed.)

Birnbaum, S., & Birnbaum, A. M. (1990). Birnbaum's Hawaii 1991. Houghton Mifflen.

Cita Chicago (17th ed.)

Birnbaum, Stephen, i Alexandra Mayes Birnbaum. Birnbaum's Hawaii 1991. Boston: Houghton Mifflen, 1990.

Cita MLA (9th ed.)

Birnbaum, Stephen, i Alexandra Mayes Birnbaum. Birnbaum's Hawaii 1991. Houghton Mifflen, 1990.