Referencing entries from Philica is extremely simple, as each time you view an Article or Observation the full citation is presented at the bottom of the page. For reference, the proper forms of citation are:

Articles
Single author: Smith, J. (2006). An empirical investigation of the conductivity of doorknobs. PHILICA.COM Article number 246.

Two authors: Dupont, P. & Dupond, M. (2006). An experimental analysis of feather fluffiness. PHILICA.COM Article number 107.

Three or more authors: McGreeb, J., Douglas, A. & Bibbler, M. (2006). On the properties of multi-authored papers. PHILICA.COM Article number 1027.

Observations
Single author: Jones, M. (2006). A novel observation on the furriness of cats. PHILICA.COM Observation number 1205.

Two authors: White, Z. & Black, A. (2006). Snow melts faster on hot surfaces than cold. PHILICA.COM Observation number 26.

Three or more authors: Olembe, S., Penn, G. & Lentil, B. (2006). Fictional names are relatively difficult to invent quickly. PHILICA.COM Observation number 856.