Cita APA (7a ed.)

Open Universtiy & Bulmer, M. (1981). Beginning research: [2A]. Open Universtiy Press.

Cita Chicago Style (17a ed.)

Open Universtiy y Martin Bulmer. Beginning Research: [2A]. Milton Keynes: Open Universtiy Press, 1981.

Cita MLA (9a ed.)

Open Universtiy y Martin Bulmer. Beginning Research: [2A]. Open Universtiy Press, 1981.