APA

Gregg R. E., .New species of Pheidole from pacific coast Islands (Hymenoptera: Formicidae). : .

Chicago

Gregg Robert E, .New species of Pheidole from pacific coast Islands (Hymenoptera: Formicidae). : .

Harvard

Gregg R. E., .New species of Pheidole from pacific coast Islands (Hymenoptera: Formicidae). : .

MLA

Gregg Robert E, .: . .