Cita APA (7th ed.)

Penrose, A. M., & Katz, S. B. (2004). Writing in the sciences: Exploring conventions of scientific discourse (2a. ed.). Pearson Education.

Cita Chicago (17th ed.)

Penrose, Ann M., i Steven B. Katz. Writing in the Sciences: Exploring Conventions of Scientific Discourse. 2a. ed. Essex: Pearson Education, 2004.

Cita MLA (9th ed.)

Penrose, Ann M., i Steven B. Katz. Writing in the Sciences: Exploring Conventions of Scientific Discourse. 2a. ed. Pearson Education, 2004.