APA (7th ed.) Citation

Hessenberg, G., Lorente de Nð, F., & Puig Adam, P. (1954). Trigonometra plana y esfØrica (4“ ed. rev. reimp.). Labor.

Chicago Style (17th ed.) Citation

Hessenberg, Gerhard, Fernando Lorente de Nð, and Pedro Puig Adam. Trigonometra Plana Y EsfØrica. 4“ ed. rev. reimp. Barcelona [etc.]: Labor, 1954.

MLA (9th ed.) Citation

Hessenberg, Gerhard, et al. Trigonometra Plana Y EsfØrica. 4“ ed. rev. reimp. Labor, 1954.