Cita APA (7a ed.)

Porter, K. I., & Koster, C. J. (1970). British union-catalogue of periodicals incorporating World list of scientific periodicals: New periodical titles. Butterworths.

Cita Chicago Style (17a ed.)

Porter, Kenneth I., y C. J. Koster. British Union-catalogue of Periodicals Incorporating World List of Scientific Periodicals: New Periodical Titles. London: Butterworths, 1970.

Cita MLA (9a ed.)

Porter, Kenneth I., y C. J. Koster. British Union-catalogue of Periodicals Incorporating World List of Scientific Periodicals: New Periodical Titles. Butterworths, 1970.