APA

Shaffer P., Hamoir D. a., Perlman R. i. & Saunal R. a. (19). Rochas e minerais. Amadora: Bertrand.

Chicago

Shaffer Paul, Hamoir Denise adapt, Perlman Raymond il and Saunal Robert adapt. 19. Rochas e minerais. Amadora: Bertrand.

Harvard

Shaffer P., Hamoir D. a., Perlman R. i. and Saunal R. a. (19). Rochas e minerais. Amadora: Bertrand.

MLA

Shaffer Paul, Hamoir Denise adapt, Perlman Raymond il and Saunal Robert adapt. Rochas e minerais. Amadora: Bertrand. 19.