APA aipamena

van der Spek, H., Arts, G. J., Zwaal, R. R., van den Burg, J., Sloof, P., & Benne, R. (1991). Conserved genes encode guide RNAs in mitochondria of Crithidia fasciculata.

Chicago Style aipamena

van der Spek, H., G J. Arts, R R. Zwaal, J. van den Burg, P. Sloof, and R. Benne. Conserved Genes Encode Guide RNAs in Mitochondria of Crithidia Fasciculata. 1991.

MLA aipamena

van der Spek, H., et al. Conserved Genes Encode Guide RNAs in Mitochondria of Crithidia Fasciculata. 1991.