APA

Biech E, . (2004). Pfeiffer annual : training. San Francisco: San Francisco, Pfeiffer.

Chicago

Biech E, . 2004. Pfeiffer annual : training. San Francisco: San Francisco, Pfeiffer.

Harvard

Biech E, . (2004). Pfeiffer annual : training. San Francisco: San Francisco, Pfeiffer.

MLA

Biech E, . Pfeiffer annual : training. San Francisco: San Francisco, Pfeiffer. 2004.