Cita APA (7a ed.)

Flegg, J., Hosking, E., & Hoasking, D. (1986). Which bird? Smith.

Cita Chicago Style (17a ed.)

Flegg, Jim, Eric Hosking, y David Hoasking. Which Bird? London: Smith, 1986.

Cita MLA (9a ed.)

Flegg, Jim, et al. Which Bird? Smith, 1986.