APA (7th ed.) Citation

Allardyce, A., Genzel, P., & Letheve, J. (1978). Letters for the international exchange of publications: A guide to their composition in English, French, German, Russian and Spanish. K. G. Saur.

Chicago Style (17th ed.) Citation

Allardyce, Alex, Peter Genzel, and Jaques Letheve. Letters for the International Exchange of Publications: A Guide to Their Composition in English, French, German, Russian and Spanish. New York: K. G. Saur, 1978.

MLA (9th ed.) Citation

Allardyce, Alex, et al. Letters for the International Exchange of Publications: A Guide to Their Composition in English, French, German, Russian and Spanish. K. G. Saur, 1978.